3951996 has 12 divisors (see below), whose sum is σ = 9221352. Its totient is φ = 1317328.

The previous prime is 3951989. The next prime is 3952009. The reversal of 3951996 is 6991593.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 164655 + ... + 164678.

It is an arithmetic number, because the mean of its divisors is an integer number (768446).

Almost surely, 2^3951996 is an apocalyptic number.

It is an amenable number.

3951996 is an abundant number, since it is smaller than the sum of its proper divisors (5269356).

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

3951996 is a wasteful number, since it uses less digits than its factorization.

3951996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329340 (or 329338 counting only the distinct ones).

The product of its digits is 65610, while the sum is 42.

The square root of 3951996 is about 1987.9627763115. The cubic root of 3951996 is about 158.1025345244.

The spelling of 3951996 in words is "three million, nine hundred fifty-one thousand, nine hundred ninety-six".