810932949 has 12 divisors (see below), whose sum is σ = 1171744236. Its totient is φ = 540438912.

The previous prime is 810932911. The next prime is 810932951. The reversal of 810932949 is 949239018.

It can be written as a sum of positive squares in 2 ways, for example, as 620906724 + 190026225 = 24918^2 + 13785^2 .

It is not a de Polignac number, because 810932949 - 2⁸ = 810932693 is a prime.

It is a super-2 number, since 2×810932949² = 1315224495547673202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810932449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16219 + ... + 43415.

It is an arithmetic number, because the mean of its divisors is an integer number (97645353).

Almost surely, 2^810932949 is an apocalyptic number.

It is an amenable number.

810932949 is a deficient number, since it is larger than the sum of its proper divisors (360811287).

810932949 is a wasteful number, since it uses less digits than its factorization.

810932949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30516 (or 30513 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 810932949 is about 28476.8844679329. The cubic root of 810932949 is about 932.5275020579.

The spelling of 810932949 in words is "eight hundred ten million, nine hundred thirty-two thousand, nine hundred forty-nine".