3978711 has 12 divisors (see below), whose sum is σ = 6269640. Its totient is φ = 2411280.

The previous prime is 3978707. The next prime is 3978727. The reversal of 3978711 is 1178793.

It is not a de Polignac number, because 3978711 - 2² = 3978707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19996 + ... + 20193.

It is an arithmetic number, because the mean of its divisors is an integer number (522470).

Almost surely, 2^3978711 is an apocalyptic number.

3978711 is a deficient number, since it is larger than the sum of its proper divisors (2290929).

3978711 is a wasteful number, since it uses less digits than its factorization.

3978711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40206 (or 40203 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 3978711 is about 1994.6706495058. The cubic root of 3978711 is about 158.4579859252.

The spelling of 3978711 in words is "three million, nine hundred seventy-eight thousand, seven hundred eleven".