3902090 has 8 divisors (see below), whose sum is σ = 7023780. Its totient is φ = 1560832.

The previous prime is 3902071. The next prime is 3902137. The reversal of 3902090 is 902093.

3902090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3214849 + 687241 = 1793^2 + 829^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195095 + ... + 195114.

Almost surely, 2^3902090 is an apocalyptic number.

3902090 is a deficient number, since it is larger than the sum of its proper divisors (3121690).

3902090 is a wasteful number, since it uses less digits than its factorization.

3902090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390216.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 3902090 is about 1975.3708512581. The cubic root of 3902090 is about 157.4342044822.

The spelling of 3902090 in words is "three million, nine hundred two thousand, ninety".