3996925 has 24 divisors (see below), whose sum is σ = 5301000. Its totient is φ = 2983680.

The previous prime is 3996919. The next prime is 3996931. The reversal of 3996925 is 5296993.

It is an interprime number because it is at equal distance from previous prime (3996919) and next prime (3996931).

It can be written as a sum of positive squares in 12 ways, for example, as 962361 + 3034564 = 981^2 + 1742^2 .

It is not a de Polignac number, because 3996925 - 2⁹ = 3996413 is a prime.

3996925 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26751 + ... + 26899.

It is an arithmetic number, because the mean of its divisors is an integer number (220875).

Almost surely, 2^3996925 is an apocalyptic number.

It is an amenable number.

3996925 is a deficient number, since it is larger than the sum of its proper divisors (1304075).

3996925 is a wasteful number, since it uses less digits than its factorization.

3996925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 220 counting only the distinct ones).

The product of its digits is 131220, while the sum is 43.

The square root of 3996925 is about 1999.2311021990. The cubic root of 3996925 is about 158.6994176169.

The spelling of 3996925 in words is "three million, nine hundred ninety-six thousand, nine hundred twenty-five".