3951172 has 6 divisors (see below), whose sum is σ = 6914558. Its totient is φ = 1975584.

The previous prime is 3951169. The next prime is 3951173. The reversal of 3951172 is 2711593.

It can be written as a sum of positive squares in only one way, i.e., 3218436 + 732736 = 1794^2 + 856^2 .

It is a super-2 number, since 2×3951172² = 31223520347168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3951172.

It is not an unprimeable number, because it can be changed into a prime (3951173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493893 + ... + 493900.

Almost surely, 2^3951172 is an apocalyptic number.

3951172 is the 1063-rd centered heptagonal number.

It is an amenable number.

3951172 is a deficient number, since it is larger than the sum of its proper divisors (2963386).

3951172 is a wasteful number, since it uses less digits than its factorization.

3951172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987797 (or 987795 counting only the distinct ones).

The product of its digits is 1890, while the sum is 28.

The square root of 3951172 is about 1987.7555181662. The cubic root of 3951172 is about 158.0915455167.

The spelling of 3951172 in words is "three million, nine hundred fifty-one thousand, one hundred seventy-two".