7990490 has 16 divisors (see below), whose sum is σ = 14734440. Its totient is φ = 3118080.

The previous prime is 7990481. The next prime is 7990519. The reversal of 7990490 is 940997.

It can be written as a sum of positive squares in 4 ways, for example, as 1825201 + 6165289 = 1351^2 + 2483^2 .

It is an Ulam number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9335 + ... + 10154.

Almost surely, 2^7990490 is an apocalyptic number.

7990490 is a deficient number, since it is larger than the sum of its proper divisors (6743950).

7990490 is a wasteful number, since it uses less digits than its factorization.

7990490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19537.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 7990490 is about 2826.7454784611. The cubic root of 7990490 is about 199.9207185764.

The spelling of 7990490 in words is "seven million, nine hundred ninety thousand, four hundred ninety".