3969172 has 12 divisors (see below), whose sum is σ = 7185780. Its totient is φ = 1916096.

The previous prime is 3969167. The next prime is 3969181. The reversal of 3969172 is 2719693.

It can be written as a sum of positive squares in 2 ways, for example, as 3111696 + 857476 = 1764^2 + 926^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16993 + ... + 17224.

It is an arithmetic number, because the mean of its divisors is an integer number (598815).

Almost surely, 2^3969172 is an apocalyptic number.

It is an amenable number.

3969172 is a deficient number, since it is larger than the sum of its proper divisors (3216608).

3969172 is a wasteful number, since it uses less digits than its factorization.

3969172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34250 (or 34248 counting only the distinct ones).

The product of its digits is 20412, while the sum is 37.

The square root of 3969172 is about 1992.2780930382. The cubic root of 3969172 is about 158.3312497110.

The spelling of 3969172 in words is "three million, nine hundred sixty-nine thousand, one hundred seventy-two".