3902385 has 16 divisors (see below), whose sum is σ = 6459840. Its totient is φ = 2009280.

The previous prime is 3902377. The next prime is 3902399. The reversal of 3902385 is 5832093.

It is a happy number.

It is not a de Polignac number, because 3902385 - 2³ = 3902377 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4051 + ... + 4920.

It is an arithmetic number, because the mean of its divisors is an integer number (403740).

Almost surely, 2^3902385 is an apocalyptic number.

It is an amenable number.

3902385 is a deficient number, since it is larger than the sum of its proper divisors (2557455).

3902385 is a wasteful number, since it uses less digits than its factorization.

3902385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9008.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 3902385 is about 1975.4455193703. The cubic root of 3902385 is about 157.4381717510.

It can be divided in two parts, 390 and 2385, that added together give a triangular number (2775 = T₇₄).

The spelling of 3902385 in words is "three million, nine hundred two thousand, three hundred eighty-five".