3975855 has 16 divisors (see below), whose sum is σ = 6851040. Its totient is φ = 1957248.

The previous prime is 3975827. The next prime is 3975857. The reversal of 3975855 is 5585793.

It is not a de Polignac number, because 3975855 - 2⁶ = 3975791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3975857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10000 + ... + 10389.

It is an arithmetic number, because the mean of its divisors is an integer number (428190).

Almost surely, 2^3975855 is an apocalyptic number.

3975855 is a deficient number, since it is larger than the sum of its proper divisors (2875185).

3975855 is a wasteful number, since it uses less digits than its factorization.

3975855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20410.

The product of its digits is 189000, while the sum is 42.

The square root of 3975855 is about 1993.9546133250. The cubic root of 3975855 is about 158.4200620569.

The spelling of 3975855 in words is "three million, nine hundred seventy-five thousand, eight hundred fifty-five".