3900285 has 32 divisors (see below), whose sum is σ = 7015680. Its totient is φ = 2055744.

The previous prime is 3900277. The next prime is 3900287. The reversal of 3900285 is 5820093.

It is not a de Polignac number, because 3900285 - 2³ = 3900277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3900287) 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, 22459 + ... + 22631.

It is an arithmetic number, because the mean of its divisors is an integer number (219240).

Almost surely, 2^3900285 is an apocalyptic number.

It is an amenable number.

3900285 is a deficient number, since it is larger than the sum of its proper divisors (3115395).

3900285 is a wasteful number, since it uses less digits than its factorization.

3900285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 3900285 is about 1974.9139221748. The cubic root of 3900285 is about 157.4099258207.

The spelling of 3900285 in words is "three million, nine hundred thousand, two hundred eighty-five".