509145944 has 16 divisors (see below), whose sum is σ = 958099200. Its totient is φ = 253652832.

The previous prime is 509145943. The next prime is 509145961. The reversal of 509145944 is 449541905.

It is a super-2 number, since 2×509145944² = 518459184583302272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509145943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112664 + ... + 117095.

It is an arithmetic number, because the mean of its divisors is an integer number (59881200).

Almost surely, 2^509145944 is an apocalyptic number.

It is an amenable number.

509145944 is a deficient number, since it is larger than the sum of its proper divisors (448953256).

509145944 is a wasteful number, since it uses less digits than its factorization.

509145944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230042 (or 230038 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 509145944 is about 22564.2625405751. The cubic root of 509145944 is about 798.5107418581.

The spelling of 509145944 in words is "five hundred nine million, one hundred forty-five thousand, nine hundred forty-four".