391207603139 has 2 divisors, whose sum is σ = 391207603140. Its totient is φ = 391207603138.

The previous prime is 391207603123. The next prime is 391207603177. The reversal of 391207603139 is 931306702193.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 391207603139 - 2⁴ = 391207603123 is a prime.

It is a super-2 number, since 2×391207603139² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 391207603139.

It is not a weakly prime, because it can be changed into another prime (391207603939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195603801569 + 195603801570.

It is an arithmetic number, because the mean of its divisors is an integer number (195603801570).

Almost surely, 2^391207603139 is an apocalyptic number.

391207603139 is a deficient number, since it is larger than the sum of its proper divisors (1).

391207603139 is an equidigital number, since it uses as much as digits as its factorization.

391207603139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 44.

The spelling of 391207603139 in words is "three hundred ninety-one billion, two hundred seven million, six hundred three thousand, one hundred thirty-nine".