3925940 has 24 divisors (see below), whose sum is σ = 8360520. Its totient is φ = 1548288.

The previous prime is 3925927. The next prime is 3925949. The reversal of 3925940 is 495293.

It can be written as a sum of positive squares in 4 ways, for example, as 13456 + 3912484 = 116^2 + 1978^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3925897 and 3925906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3925949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116 + ... + 2804.

It is an arithmetic number, because the mean of its divisors is an integer number (348355).

Almost surely, 2^3925940 is an apocalyptic number.

It is an amenable number.

3925940 is an abundant number, since it is smaller than the sum of its proper divisors (4434580).

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

3925940 is a wasteful number, since it uses less digits than its factorization.

3925940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771 (or 2769 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 3925940 is about 1981.3984960123. The cubic root of 3925940 is about 157.7543048831.

The spelling of 3925940 in words is "three million, nine hundred twenty-five thousand, nine hundred forty".