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380839079 = 537185643
BaseRepresentation
bin10110101100110…
…010010010100111
3222112121122000002
4112230302102213
51234443322304
6101442411515
712303036005
oct2654622247
9875548002
10380839079
11185a79045
12a7660b9b
1360b9308a
1438817a75
152367b31e
hex16b324a7

380839079 has 4 divisors (see below), whose sum is σ = 388024776. Its totient is φ = 373653384.

The previous prime is 380839051. The next prime is 380839087. The reversal of 380839079 is 970938083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970938083 = 1576184319.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-380839079 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 (380839379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3592769 + ... + 3592874.

It is an arithmetic number, because the mean of its divisors is an integer number (97006194).

Almost surely, 2380839079 is an apocalyptic number.

380839079 is a deficient number, since it is larger than the sum of its proper divisors (7185697).

380839079 is an equidigital number, since it uses as much as digits as its factorization.

380839079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7185696.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 380839079 is about 19515.0987443057. The cubic root of 380839079 is about 724.8483735229.

The spelling of 380839079 in words is "three hundred eighty million, eight hundred thirty-nine thousand, seventy-nine".

Divisors: 1 53 7185643 380839079