509470881 has 8 divisors (see below), whose sum is σ = 689433504. Its totient is φ = 334577760.

The previous prime is 509470859. The next prime is 509470891. The reversal of 509470881 is 188074905.

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

It is not a de Polignac number, because 509470881 - 2⁶ = 509470817 is a prime.

It is a super-2 number, since 2×509470881² = 519121157173832322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (509470891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1267140 + ... + 1267541.

It is an arithmetic number, because the mean of its divisors is an integer number (86179188).

Almost surely, 2^509470881 is an apocalyptic number.

It is an amenable number.

509470881 is a deficient number, since it is larger than the sum of its proper divisors (179962623).

509470881 is a wasteful number, since it uses less digits than its factorization.

509470881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534751.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 509470881 is about 22571.4616496141. The cubic root of 509470881 is about 798.6805756163.

The spelling of 509470881 in words is "five hundred nine million, four hundred seventy thousand, eight hundred eighty-one".