399502 has 4 divisors (see below), whose sum is σ = 599256. Its totient is φ = 199750.

The previous prime is 399499. The next prime is 399523. The reversal of 399502 is 205993.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99874 + ... + 99877.

It is an arithmetic number, because the mean of its divisors is an integer number (149814).

2³⁹⁹⁵⁰² is an apocalyptic number.

399502 is a deficient number, since it is larger than the sum of its proper divisors (199754).

399502 is a wasteful number, since it uses less digits than its factorization.

399502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199753.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 399502 is about 632.0617058484. The cubic root of 399502 is about 73.6500398129.

The spelling of 399502 in words is "three hundred ninety-nine thousand, five hundred two".