3171979 has 4 divisors (see below), whose sum is σ = 3358584. Its totient is φ = 2985376.

The previous prime is 3171977. The next prime is 3171989. The reversal of 3171979 is 9791713.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3171979 - 2¹ = 3171977 is a prime.

It is a super-2 number, since 2×3171979² = 20122901552882, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3171977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93277 + ... + 93310.

It is an arithmetic number, because the mean of its divisors is an integer number (839646).

Almost surely, 2^3171979 is an apocalyptic number.

3171979 is a deficient number, since it is larger than the sum of its proper divisors (186605).

3171979 is a wasteful number, since it uses less digits than its factorization.

3171979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186604.

The product of its digits is 11907, while the sum is 37.

The square root of 3171979 is about 1781.0050533337. The cubic root of 3171979 is about 146.9298722994.

It can be divided in two parts, 317197 and 9, that added together give a triangular number (317206 = T₇₉₆).

The spelling of 3171979 in words is "three million, one hundred seventy-one thousand, nine hundred seventy-nine".