399679162541 has 16 divisors (see below), whose sum is σ = 437930592768. Its totient is φ = 363126144000.

The previous prime is 399679162501. The next prime is 399679162583. The reversal of 399679162541 is 145261976993.

It is a cyclic number.

It is not a de Polignac number, because 399679162541 - 2³⁸ = 124801255597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399679162501) 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 15 ways as a sum of consecutive naturals, for example, 734315 + ... + 1156968.

It is an arithmetic number, because the mean of its divisors is an integer number (27370662048).

Almost surely, 2^399679162541 is an apocalyptic number.

399679162541 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

399679162541 is a deficient number, since it is larger than the sum of its proper divisors (38251430227).

399679162541 is a wasteful number, since it uses less digits than its factorization.

399679162541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891732.

The product of its digits is 22044960, while the sum is 62.

The spelling of 399679162541 in words is "three hundred ninety-nine billion, six hundred seventy-nine million, one hundred sixty-two thousand, five hundred forty-one".