3199972761 has 12 divisors (see below), whose sum is σ = 4865455920. Its totient is φ = 2021035320.

The previous prime is 3199972757. The next prime is 3199972771. The reversal of 3199972761 is 1672799913.

It is a happy number.

It is not a de Polignac number, because 3199972761 - 2² = 3199972757 is a prime.

It is a super-2 number, since 2×3199972761² = 20479651342283926242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3199972698 and 3199972707.

It is not an unprimeable number, because it can be changed into a prime (3199972771) 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, 9356475 + ... + 9356816.

It is an arithmetic number, because the mean of its divisors is an integer number (405454660).

Almost surely, 2^3199972761 is an apocalyptic number.

It is an amenable number.

3199972761 is a deficient number, since it is larger than the sum of its proper divisors (1665483159).

3199972761 is a wasteful number, since it uses less digits than its factorization.

3199972761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18713316 (or 18713313 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 54.

The square root of 3199972761 is about 56568.3017333913. The cubic root of 3199972761 is about 1473.6084182220.

The spelling of 3199972761 in words is "three billion, one hundred ninety-nine million, nine hundred seventy-two thousand, seven hundred sixty-one".