3940290 has 24 divisors (see below), whose sum is σ = 10244988. Its totient is φ = 1050720.

The previous prime is 3940289. The next prime is 3940301. The reversal of 3940290 is 920493.

It can be written as a sum of positive squares in 2 ways, for example, as 3651921 + 288369 = 1911^2 + 537^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21801 + ... + 21980.

Almost surely, 2^3940290 is an apocalyptic number.

3940290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3940290 is an abundant number, since it is smaller than the sum of its proper divisors (6304698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3940290 is a wasteful number, since it uses less digits than its factorization.

3940290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43794 (or 43791 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 3940290 is about 1985.0163727284. The cubic root of 3940290 is about 157.9462777353.

The spelling of 3940290 in words is "three million, nine hundred forty thousand, two hundred ninety".