509343408 has 60 divisors (see below), whose sum is σ = 1629093648. Its totient is φ = 145526400.

The previous prime is 509343407. The next prime is 509343413. The reversal of 509343408 is 804343905.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (509343407) 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, 251643 + ... + 253658.

Almost surely, 2^509343408 is an apocalyptic number.

It is an amenable number.

509343408 is an abundant number, since it is smaller than the sum of its proper divisors (1119750240).

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

509343408 is a wasteful number, since it uses less digits than its factorization.

509343408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505322 (or 505313 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 509343408 is about 22568.6377081117. The cubic root of 509343408 is about 798.6139583308.

The spelling of 509343408 in words is "five hundred nine million, three hundred forty-three thousand, four hundred eight".