399477465018 has 24 divisors (see below), whose sum is σ = 865611957600. Its totient is φ = 133147239624.

The previous prime is 399477465017. The next prime is 399477465059. The reversal of 399477465018 is 810564774993.

399477465018 is a `hidden beast` number, since 3 + 9 + 94 + 77 + 465 + 0 + 18 = 666.

It is not an unprimeable number, because it can be changed into a prime (399477465011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 785028 + ... + 1189631.

It is an arithmetic number, because the mean of its divisors is an integer number (36067164900).

Almost surely, 2^399477465018 is an apocalyptic number.

399477465018 is an abundant number, since it is smaller than the sum of its proper divisors (466134492582).

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

399477465018 is a wasteful number, since it uses less digits than its factorization.

399477465018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985906 (or 1985903 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 399477465018 in words is "three hundred ninety-nine billion, four hundred seventy-seven million, four hundred sixty-five thousand, eighteen".