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7947930693 = 316316253437
BaseRepresentation
bin1110110011011101…
…11100110001000101
3202111220102201020110
413121232330301011
5112234132240233
63352355423233
7400646203413
oct73156746105
922456381213
107947930693
113409443a6a
1216598b4b19
13998811b91
145557d22b3
15317b62663
hex1d9bbcc45

7947930693 has 8 divisors (see below), whose sum is σ = 10662255328. Its totient is φ = 5266113264.

The previous prime is 7947930689. The next prime is 7947930703. The reversal of 7947930693 is 3960397497.

7947930693 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7947930693 - 22 = 7947930689 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7947930673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8126230 + ... + 8127207.

It is an arithmetic number, because the mean of its divisors is an integer number (1332781916).

Almost surely, 27947930693 is an apocalyptic number.

It is an amenable number.

7947930693 is a deficient number, since it is larger than the sum of its proper divisors (2714324635).

7947930693 is a wasteful number, since it uses less digits than its factorization.

7947930693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16253603.

The product of its (nonzero) digits is 7715736, while the sum is 57.

The square root of 7947930693 is about 89151.1676479899. The cubic root of 7947930693 is about 1995.6514429618.

The spelling of 7947930693 in words is "seven billion, nine hundred forty-seven million, nine hundred thirty thousand, six hundred ninety-three".

Divisors: 1 3 163 489 16253437 48760311 2649310231 7947930693