3912939 has 12 divisors (see below), whose sum is σ = 5748600. Its totient is φ = 2564064.

The previous prime is 3912919. The next prime is 3912943. The reversal of 3912939 is 9392193.

It is not a de Polignac number, because 3912939 - 2²⁰ = 2864363 is a prime.

It is a super-2 number, since 2×3912939² = 30622183235442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3912919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3154 + ... + 4215.

It is an arithmetic number, because the mean of its divisors is an integer number (479050).

Almost surely, 2^3912939 is an apocalyptic number.

3912939 is a deficient number, since it is larger than the sum of its proper divisors (1835661).

3912939 is a wasteful number, since it uses less digits than its factorization.

3912939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7434 (or 7431 counting only the distinct ones).

The product of its digits is 13122, while the sum is 36.

The square root of 3912939 is about 1978.1150118231. The cubic root of 3912939 is about 157.5799745013.

It can be divided in two parts, 3912 and 939, that added together give a triangular number (4851 = T₉₈).

The spelling of 3912939 in words is "three million, nine hundred twelve thousand, nine hundred thirty-nine".