3906290 has 16 divisors (see below), whose sum is σ = 7053912. Its totient is φ = 1557504.

The previous prime is 3906283. The next prime is 3906293. The reversal of 3906290 is 926093.

It can be written as a sum of positive squares in 4 ways, for example, as 3682561 + 223729 = 1919^2 + 473^2 .

It is not an unprimeable number, because it can be changed into a prime (3906293) 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, 5432 + ... + 6108.

Almost surely, 2^3906290 is an apocalyptic number.

3906290 is a deficient number, since it is larger than the sum of its proper divisors (3147622).

3906290 is a wasteful number, since it uses less digits than its factorization.

3906290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 3906290 is about 1976.4336568678. The cubic root of 3906290 is about 157.4906688013.

The spelling of 3906290 in words is "three million, nine hundred six thousand, two hundred ninety".