3918290 has 16 divisors (see below), whose sum is σ = 7186968. Its totient is φ = 1537536.

The previous prime is 3918283. The next prime is 3918293. The reversal of 3918290 is 928193.

It can be written as a sum of positive squares in 4 ways, for example, as 2900209 + 1018081 = 1703^2 + 1009^2 .

It is not an unprimeable number, because it can be changed into a prime (3918293) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3167 + ... + 4226.

Almost surely, 2^3918290 is an apocalyptic number.

3918290 is a deficient number, since it is larger than the sum of its proper divisors (3268678).

3918290 is a wasteful number, since it uses less digits than its factorization.

3918290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7453.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 3918290 is about 1979.4671000044. The cubic root of 3918290 is about 157.6517727385.

The spelling of 3918290 in words is "three million, nine hundred eighteen thousand, two hundred ninety".