509898972 has 48 divisors (see below), whose sum is σ = 1366243200. Its totient is φ = 146381760.

The previous prime is 509898971. The next prime is 509898973. The reversal of 509898972 is 279898905.

It is an interprime number because it is at equal distance from previous prime (509898971) and next prime (509898973).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509898971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99147 + ... + 104162.

It is an arithmetic number, because the mean of its divisors is an integer number (28463400).

Almost surely, 2^509898972 is an apocalyptic number.

It is an amenable number.

509898972 is an abundant number, since it is smaller than the sum of its proper divisors (856344228).

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

509898972 is a wasteful number, since it uses less digits than its factorization.

509898972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203346 (or 203344 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 57.

The square root of 509898972 is about 22580.9426729709. The cubic root of 509898972 is about 798.9042143358.

The spelling of 509898972 in words is "five hundred nine million, eight hundred ninety-eight thousand, nine hundred seventy-two".