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39793280221 = 971156726153
BaseRepresentation
bin100101000011110111…
…010100010011011101
310210201021002002021101
4211003313110103131
51122444034431341
630140352033101
72606054205142
oct450367242335
9123637062241
1039793280221
11159702a6452
127866832791
1339a22b4776
141cd6d5a3c9
15107d7a1831
hex943dd44dd

39793280221 has 8 divisors (see below), whose sum is σ = 39861206784. Its totient is φ = 39725411040.

The previous prime is 39793280201. The next prime is 39793280273. The reversal of 39793280221 is 12208239793.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-39793280221 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 (39793280201) 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, 1508481 + ... + 1534633.

It is an arithmetic number, because the mean of its divisors is an integer number (4982650848).

Almost surely, 239793280221 is an apocalyptic number.

It is an amenable number.

39793280221 is a deficient number, since it is larger than the sum of its proper divisors (67926563).

39793280221 is a wasteful number, since it uses less digits than its factorization.

39793280221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28691.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 39793280221 in words is "thirty-nine billion, seven hundred ninety-three million, two hundred eighty thousand, two hundred twenty-one".

Divisors: 1 971 1567 26153 1521557 25394563 40981751 39793280221