402339 has 32 divisors (see below), whose sum is σ = 691200. Its totient is φ = 206976.

The previous prime is 402331. The next prime is 402341. The reversal of 402339 is 933204.

It is not a de Polignac number, because 402339 - 2³ = 402331 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (402331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17482 + ... + 17504.

It is an arithmetic number, because the mean of its divisors is an integer number (21600).

2⁴⁰²³³⁹ is an apocalyptic number.

402339 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

402339 is a deficient number, since it is larger than the sum of its proper divisors (288861).

402339 is a wasteful number, since it uses less digits than its factorization.

402339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 402339 is about 634.3019785560. The cubic root of 402339 is about 73.8239667754.

It can be divided in two parts, 402 and 339, that added together give a triangular number (741 = T₃₈).

The spelling of 402339 in words is "four hundred two thousand, three hundred thirty-nine".