3918838 has 16 divisors (see below), whose sum is σ = 7329024. Its totient is φ = 1526760.

The previous prime is 3918829. The next prime is 3918851. The reversal of 3918838 is 8388193.

It is a self number, because there is not a number n which added to its sum of digits gives 3918838.

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, 12570 + ... + 12877.

It is an arithmetic number, because the mean of its divisors is an integer number (458064).

Almost surely, 2^3918838 is an apocalyptic number.

3918838 is a deficient number, since it is larger than the sum of its proper divisors (3410186).

3918838 is a wasteful number, since it uses less digits than its factorization.

3918838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25467.

The product of its digits is 41472, while the sum is 40.

The square root of 3918838 is about 1979.6055162582. The cubic root of 3918838 is about 157.6591219601.

It can be divided in two parts, 391 and 8838, that added together give a palindrome (9229).

The spelling of 3918838 in words is "three million, nine hundred eighteen thousand, eight hundred thirty-eight".