399298243057 has 64 divisors (see below), whose sum is σ = 510770880000. Its totient is φ = 304453416960.

The previous prime is 399298243039. The next prime is 399298243073. The reversal of 399298243057 is 750342892993.

It is not a de Polignac number, because 399298243057 - 2¹¹ = 399298241009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 399298242986 and 399298243004.

It is not an unprimeable number, because it can be changed into a prime (399298243007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20930119 + ... + 20949187.

It is an arithmetic number, because the mean of its divisors is an integer number (7980795000).

Almost surely, 2^399298243057 is an apocalyptic number.

It is an amenable number.

399298243057 is a deficient number, since it is larger than the sum of its proper divisors (111472636943).

399298243057 is a wasteful number, since it uses less digits than its factorization.

399298243057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19274.

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 399298243057 in words is "three hundred ninety-nine billion, two hundred ninety-eight million, two hundred forty-three thousand, fifty-seven".