3129916 has 12 divisors (see below), whose sum is σ = 5510232. Its totient is φ = 1555568.

The previous prime is 3129913. The next prime is 3129923. The reversal of 3129916 is 6199213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3129911) 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, 1570 + ... + 2953.

It is an arithmetic number, because the mean of its divisors is an integer number (459186).

Almost surely, 2^3129916 is an apocalyptic number.

It is an amenable number.

3129916 is a deficient number, since it is larger than the sum of its proper divisors (2380316).

3129916 is a wasteful number, since it uses less digits than its factorization.

3129916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4700 (or 4698 counting only the distinct ones).

The product of its digits is 2916, while the sum is 31.

The square root of 3129916 is about 1769.1568613325. The cubic root of 3129916 is about 146.2775105917.

The spelling of 3129916 in words is "three million, one hundred twenty-nine thousand, nine hundred sixteen".