399252954 has 16 divisors (see below), whose sum is σ = 799548192. Its totient is φ = 132910608.

The previous prime is 399252923. The next prime is 399252967. The reversal of 399252954 is 459252993.

It is a happy number.

It is a super-2 number, since 2×399252954² = 318805842555452232, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38404 + ... + 47679.

It is an arithmetic number, because the mean of its divisors is an integer number (49971762).

Almost surely, 2^399252954 is an apocalyptic number.

399252954 is an abundant number, since it is smaller than the sum of its proper divisors (400295238).

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

399252954 is a wasteful number, since it uses less digits than its factorization.

399252954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86861.

The product of its digits is 874800, while the sum is 48.

The square root of 399252954 is about 19981.3151218832. The cubic root of 399252954 is about 736.3473237134.

The spelling of 399252954 in words is "three hundred ninety-nine million, two hundred fifty-two thousand, nine hundred fifty-four".