399652 has 24 divisors (see below), whose sum is σ = 790272. Its totient is φ = 175200.

The previous prime is 399647. The next prime is 399667. The reversal of 399652 is 256993.

It is a happy number.

It is a super-2 number, since 2×399652² = 319443442208, which contains 22 as substring.

It is an unprimeable number.

399652 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 1218 + ... + 1510.

It is an arithmetic number, because the mean of its divisors is an integer number (32928).

2³⁹⁹⁶⁵² is an apocalyptic number.

It is an amenable number.

399652 is a deficient number, since it is larger than the sum of its proper divisors (390620).

399652 is a wasteful number, since it uses less digits than its factorization.

399652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339 (or 337 counting only the distinct ones).

The product of its digits is 14580, while the sum is 34.

The square root of 399652 is about 632.1803540130. The cubic root of 399652 is about 73.6592563906.

The spelling of 399652 in words is "three hundred ninety-nine thousand, six hundred fifty-two".