402579 has 12 divisors (see below), whose sum is σ = 596232. Its totient is φ = 261600.

The previous prime is 402559. The next prime is 402581. The reversal of 402579 is 975204.

It is a de Polignac number, because none of the positive numbers 2^k-402579 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177 + ... + 914.

It is an arithmetic number, because the mean of its divisors is an integer number (49686).

2⁴⁰²⁵⁷⁹ is an apocalyptic number.

402579 is a deficient number, since it is larger than the sum of its proper divisors (193653).

402579 is a wasteful number, since it uses less digits than its factorization.

402579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138 (or 1135 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 402579 is about 634.4911346898. The cubic root of 402579 is about 73.8386428158.

The spelling of 402579 in words is "four hundred two thousand, five hundred seventy-nine".