3975918 has 32 divisors (see below), whose sum is σ = 8487936. Its totient is φ = 1238688.

The previous prime is 3975911. The next prime is 3975947. The reversal of 3975918 is 8195793.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3975918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3975911) 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, 6180 + ... + 6792.

It is an arithmetic number, because the mean of its divisors is an integer number (265248).

Almost surely, 2^3975918 is an apocalyptic number.

3975918 is an abundant number, since it is smaller than the sum of its proper divisors (4512018).

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

3975918 is a wasteful number, since it uses less digits than its factorization.

3975918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688.

The product of its digits is 68040, while the sum is 42.

The square root of 3975918 is about 1993.9704110142. The cubic root of 3975918 is about 158.4208988087.

It can be divided in two parts, 39 and 75918, that added together give a palindrome (75957).

The spelling of 3975918 in words is "three million, nine hundred seventy-five thousand, nine hundred eighteen".