3979688 has 8 divisors (see below), whose sum is σ = 7461930. Its totient is φ = 1989840.

The previous prime is 3979669. The next prime is 3979691. The reversal of 3979688 is 8869793.

It can be written as a sum of positive squares in only one way, i.e., 3833764 + 145924 = 1958^2 + 382^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248723 + ... + 248738.

Almost surely, 2^3979688 is an apocalyptic number.

It is an amenable number.

3979688 is a deficient number, since it is larger than the sum of its proper divisors (3482242).

3979688 is a wasteful number, since it uses less digits than its factorization.

3979688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497467 (or 497463 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The square root of 3979688 is about 1994.9155370592. The cubic root of 3979688 is about 158.4709550151.

The spelling of 3979688 in words is "three million, nine hundred seventy-nine thousand, six hundred eighty-eight".