399266803124 has 24 divisors (see below), whose sum is σ = 813600281088. Its totient is φ = 167885771040.

The previous prime is 399266803079. The next prime is 399266803127. The reversal of 399266803124 is 421308662993.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399266803127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134522372 + ... + 134525339.

It is an arithmetic number, because the mean of its divisors is an integer number (33900011712).

Almost surely, 2^399266803124 is an apocalyptic number.

It is an amenable number.

399266803124 is an abundant number, since it is smaller than the sum of its proper divisors (414333477964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399266803124 is a wasteful number, since it uses less digits than its factorization.

399266803124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269047775 (or 269047773 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 53.

The spelling of 399266803124 in words is "three hundred ninety-nine billion, two hundred sixty-six million, eight hundred three thousand, one hundred twenty-four".