3925684 has 18 divisors (see below), whose sum is σ = 7991970. Its totient is φ = 1682352.

The previous prime is 3925667. The next prime is 3925693. The reversal of 3925684 is 4865293.

It can be written as a sum of positive squares in only one way, i.e., 2965284 + 960400 = 1722^2 + 980^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9819 + ... + 10210.

Almost surely, 2^3925684 is an apocalyptic number.

It is an amenable number.

3925684 is an abundant number, since it is smaller than the sum of its proper divisors (4066286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3925684 is a wasteful number, since it uses less digits than its factorization.

3925684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20047 (or 20038 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 3925684 is about 1981.3338941228. Note that the first 3 decimals coincide. The cubic root of 3925684 is about 157.7508758971.

It can be divided in two parts, 39256 and 84, that added together give a triangular number (39340 = T₂₈₀).

The spelling of 3925684 in words is "three million, nine hundred twenty-five thousand, six hundred eighty-four".