3117992 has 8 divisors (see below), whose sum is σ = 5846250. Its totient is φ = 1558992.

The previous prime is 3117991. The next prime is 3117997. The reversal of 3117992 is 2997113.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2579236 + 538756 = 1606^2 + 734^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×3117992² = 19443748224128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3117991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194867 + ... + 194882.

Almost surely, 2^3117992 is an apocalyptic number.

It is an amenable number.

3117992 is a deficient number, since it is larger than the sum of its proper divisors (2728258).

3117992 is a wasteful number, since it uses less digits than its factorization.

3117992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389755 (or 389751 counting only the distinct ones).

The product of its digits is 3402, while the sum is 32.

The square root of 3117992 is about 1765.7836787104. The cubic root of 3117992 is about 146.0915170267.

The spelling of 3117992 in words is "three million, one hundred seventeen thousand, nine hundred ninety-two".