3975858 has 64 divisors (see below), whose sum is σ = 9642240. Its totient is φ = 1209600.

The previous prime is 3975857. The next prime is 3975863. The reversal of 3975858 is 8585793.

Its product of digits (302400) is a multiple of the sum of its prime factors (160).

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 31 ways as a sum of consecutive naturals, for example, 55963 + ... + 56033.

It is an arithmetic number, because the mean of its divisors is an integer number (150660).

Almost surely, 2^3975858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3975858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4821120).

3975858 is an abundant number, since it is smaller than the sum of its proper divisors (5666382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3975858 is a wasteful number, since it uses less digits than its factorization.

3975858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 154 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 3975858 is about 1993.9553655987. The cubic root of 3975858 is about 158.4201019025.

The spelling of 3975858 in words is "three million, nine hundred seventy-five thousand, eight hundred fifty-eight".