399752 has 16 divisors (see below), whose sum is σ = 758160. Its totient is φ = 197584.

The previous prime is 399739. The next prime is 399757. The reversal of 399752 is 257993.

It is not an unprimeable number, because it can be changed into a prime (399757) 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, 623 + ... + 1089.

It is an arithmetic number, because the mean of its divisors is an integer number (47385).

2³⁹⁹⁷⁵² is an apocalyptic number.

It is an amenable number.

399752 is a deficient number, since it is larger than the sum of its proper divisors (358408).

399752 is a wasteful number, since it uses less digits than its factorization.

399752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 576 counting only the distinct ones).

The product of its digits is 17010, while the sum is 35.

The square root of 399752 is about 632.2594404198. The cubic root of 399752 is about 73.6653994945.

The spelling of 399752 in words is "three hundred ninety-nine thousand, seven hundred fifty-two".