509402 has 8 divisors (see below), whose sum is σ = 767136. Its totient is φ = 253692.

The previous prime is 509393. The next prime is 509413. The reversal of 509402 is 204905.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713 + ... + 1235.

It is an arithmetic number, because the mean of its divisors is an integer number (95892).

2⁵⁰⁹⁴⁰² is an apocalyptic number.

509402 is a deficient number, since it is larger than the sum of its proper divisors (257734).

509402 is a wasteful number, since it uses less digits than its factorization.

509402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 509402 is about 713.7240363053. The cubic root of 509402 is about 79.8644579842.

The spelling of 509402 in words is "five hundred nine thousand, four hundred two".