3975998 has 16 divisors (see below), whose sum is σ = 6631296. Its totient is φ = 1775520.

The previous prime is 3975971. The next prime is 3976001. The reversal of 3975998 is 8995793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1661 + ... + 3272.

It is an arithmetic number, because the mean of its divisors is an integer number (414456).

Almost surely, 2^3975998 is an apocalyptic number.

3975998 is a deficient number, since it is larger than the sum of its proper divisors (2655298).

3975998 is a wasteful number, since it uses less digits than its factorization.

3975998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4979.

The product of its digits is 612360, while the sum is 50.

The square root of 3975998 is about 1993.9904713915. The cubic root of 3975998 is about 158.4219613379.

The spelling of 3975998 in words is "three million, nine hundred seventy-five thousand, nine hundred ninety-eight".