509690490 has 32 divisors (see below), whose sum is σ = 1225155456. Its totient is φ = 135706560.

The previous prime is 509690479. The next prime is 509690501. The reversal of 509690490 is 94096905.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (509690479) and next prime (509690501).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6979 + ... + 32681.

It is an arithmetic number, because the mean of its divisors is an integer number (38286108).

Almost surely, 2^509690490 is an apocalyptic number.

509690490 is an abundant number, since it is smaller than the sum of its proper divisors (715464966).

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

509690490 is a wasteful number, since it uses less digits than its factorization.

509690490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26374.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 509690490 is about 22576.3258746856. The cubic root of 509690490 is about 798.7953170426.

The spelling of 509690490 in words is "five hundred nine million, six hundred ninety thousand, four hundred ninety".