399952 has 20 divisors (see below), whose sum is σ = 885856. Its totient is φ = 171360.

The previous prime is 399941. The next prime is 399953. The reversal of 399952 is 259993.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1674 + ... + 1897.

2³⁹⁹⁹⁵² is an apocalyptic number.

It is an amenable number.

399952 is an abundant number, since it is smaller than the sum of its proper divisors (485904).

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

399952 is a wasteful number, since it uses less digits than its factorization.

399952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3586 (or 3580 counting only the distinct ones).

The product of its digits is 21870, while the sum is 37.

The square root of 399952 is about 632.4175835633. The cubic root of 399952 is about 73.6776826297.

The spelling of 399952 in words is "three hundred ninety-nine thousand, nine hundred fifty-two".