509049408 has 56 divisors (see below), whose sum is σ = 1539272512. Its totient is φ = 145442304.

The previous prime is 509049391. The next prime is 509049439. The reversal of 509049408 is 804940905.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188035 + ... + 190722.

Almost surely, 2^509049408 is an apocalyptic number.

It is an amenable number.

509049408 is an abundant number, since it is smaller than the sum of its proper divisors (1030223104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

509049408 is a wasteful number, since it uses less digits than its factorization.

509049408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378779 (or 378769 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 509049408 is about 22562.1233043346. The cubic root of 509049408 is about 798.4602717808.

The spelling of 509049408 in words is "five hundred nine million, forty-nine thousand, four hundred eight".