396738636659 has 2 divisors, whose sum is σ = 396738636660. Its totient is φ = 396738636658.

The previous prime is 396738636649. The next prime is 396738636677. The reversal of 396738636659 is 956636837693.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 396738636659 - 2⁸ = 396738636403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 396738636592 and 396738636601.

It is not a weakly prime, because it can be changed into another prime (396738636649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198369318329 + 198369318330.

It is an arithmetic number, because the mean of its divisors is an integer number (198369318330).

Almost surely, 2^396738636659 is an apocalyptic number.

396738636659 is a deficient number, since it is larger than the sum of its proper divisors (1).

396738636659 is an equidigital number, since it uses as much as digits as its factorization.

396738636659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 793618560, while the sum is 71.

The spelling of 396738636659 in words is "three hundred ninety-six billion, seven hundred thirty-eight million, six hundred thirty-six thousand, six hundred fifty-nine".