509744493 has 6 divisors (see below), whose sum is σ = 736297614. Its totient is φ = 339829656.

The previous prime is 509744479. The next prime is 509744503. The reversal of 509744493 is 394447905.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 410184009 + 99560484 = 20253^2 + 9978^2 .

It is not a de Polignac number, because 509744493 - 2⁵ = 509744461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509744413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28319130 + ... + 28319147.

It is an arithmetic number, because the mean of its divisors is an integer number (122716269).

Almost surely, 2^509744493 is an apocalyptic number.

It is an amenable number.

509744493 is a deficient number, since it is larger than the sum of its proper divisors (226553121).

509744493 is a wasteful number, since it uses less digits than its factorization.

509744493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56638283 (or 56638280 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 509744493 is about 22577.5218524975. The cubic root of 509744493 is about 798.8235275095.

The spelling of 509744493 in words is "five hundred nine million, seven hundred forty-four thousand, four hundred ninety-three".