3905388 has 24 divisors (see below), whose sum is σ = 10125360. Its totient is φ = 1301760.

The previous prime is 3905383. The next prime is 3905413. The reversal of 3905388 is 8835093.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3905383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17973 + ... + 18188.

It is an arithmetic number, because the mean of its divisors is an integer number (421890).

Almost surely, 2^3905388 is an apocalyptic number.

It is an amenable number.

3905388 is an abundant number, since it is smaller than the sum of its proper divisors (6219972).

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

3905388 is a wasteful number, since it uses less digits than its factorization.

3905388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36174 (or 36166 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 3905388 is about 1976.2054549059. The cubic root of 3905388 is about 157.4785458305.

It can be divided in two parts, 390 and 5388, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 3905388 in words is "three million, nine hundred five thousand, three hundred eighty-eight".