3979925 has 12 divisors (see below), whose sum is σ = 4959876. Its totient is φ = 3168000.

The previous prime is 3979901. The next prime is 3979957. The reversal of 3979925 is 5299793.

It can be written as a sum of positive squares in 6 ways, for example, as 320356 + 3659569 = 566^2 + 1913^2 .

It is not a de Polignac number, because 3979925 - 2⁶ = 3979861 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9725 + ... + 10125.

It is an arithmetic number, because the mean of its divisors is an integer number (413323).

Almost surely, 2^3979925 is an apocalyptic number.

It is an amenable number.

3979925 is a deficient number, since it is larger than the sum of its proper divisors (979951).

3979925 is a wasteful number, since it uses less digits than its factorization.

3979925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808 (or 803 counting only the distinct ones).

The product of its digits is 153090, while the sum is 44.

The square root of 3979925 is about 1994.9749371859. The cubic root of 3979925 is about 158.4741007283.

It can be divided in two parts, 397 and 9925, that multiplied together give a square (3940225 = 1985²).

The spelling of 3979925 in words is "three million, nine hundred seventy-nine thousand, nine hundred twenty-five".