5209089831 has 40 divisors (see below), whose sum is σ = 8500420368. Its totient is φ = 3152736000.

The previous prime is 5209089827. The next prime is 5209089839. The reversal of 5209089831 is 1389809025.

It is a happy number.

5209089831 is a `hidden beast` number, since 520 + 9 + 0 + 8 + 98 + 31 = 666.

It is not a de Polignac number, because 5209089831 - 2² = 5209089827 is a prime.

It is a super-2 number, since 2×5209089831² = 54269233734855217122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5209089839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 727951 + ... + 735071.

Almost surely, 2^5209089831 is an apocalyptic number.

5209089831 is a deficient number, since it is larger than the sum of its proper divisors (3291330537).

5209089831 is a wasteful number, since it uses less digits than its factorization.

5209089831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7965 (or 7956 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 5209089831 is about 72174.0246279782. The cubic root of 5209089831 is about 1733.4871060034.

The spelling of 5209089831 in words is "five billion, two hundred nine million, eighty-nine thousand, eight hundred thirty-one".