399862 has 4 divisors (see below), whose sum is σ = 599796. Its totient is φ = 199930.

The previous prime is 399853. The next prime is 399871. The reversal of 399862 is 268993.

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

It is an interprime number because it is at equal distance from previous prime (399853) and next prime (399871).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99964 + ... + 99967.

It is an arithmetic number, because the mean of its divisors is an integer number (149949).

2³⁹⁹⁸⁶² is an apocalyptic number.

399862 is a deficient number, since it is larger than the sum of its proper divisors (199934).

399862 is a wasteful number, since it uses less digits than its factorization.

399862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199933.

The product of its digits is 23328, while the sum is 37.

The square root of 399862 is about 632.3464240430. The cubic root of 399862 is about 73.6721557257.

The spelling of 399862 in words is "three hundred ninety-nine thousand, eight hundred sixty-two".