3978712 has 8 divisors (see below), whose sum is σ = 7460100. Its totient is φ = 1989352.

The previous prime is 3978707. The next prime is 3978727. The reversal of 3978712 is 2178793.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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 as a sum of consecutive naturals, namely, 248662 + ... + 248677.

Almost surely, 2^3978712 is an apocalyptic number.

It is an amenable number.

3978712 is a deficient number, since it is larger than the sum of its proper divisors (3481388).

3978712 is a wasteful number, since it uses less digits than its factorization.

3978712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497345 (or 497341 counting only the distinct ones).

The product of its digits is 21168, while the sum is 37.

The square root of 3978712 is about 1994.6709001738. The cubic root of 3978712 is about 158.4579992007.

The spelling of 3978712 in words is "three million, nine hundred seventy-eight thousand, seven hundred twelve".