509974 has 4 divisors (see below), whose sum is σ = 764964. Its totient is φ = 254986.

The previous prime is 509963. The next prime is 509989. The reversal of 509974 is 479905.

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

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, 127492 + ... + 127495.

It is an arithmetic number, because the mean of its divisors is an integer number (191241).

2⁵⁰⁹⁹⁷⁴ is an apocalyptic number.

509974 is a deficient number, since it is larger than the sum of its proper divisors (254990).

509974 is a wasteful number, since it uses less digits than its factorization.

509974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254989.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 509974 is about 714.1246389812. The cubic root of 509974 is about 79.8943396768.

The spelling of 509974 in words is "five hundred nine thousand, nine hundred seventy-four".