7990442 has 8 divisors (see below), whose sum is σ = 12690756. Its totient is φ = 3760192.

The previous prime is 7990441. The next prime is 7990471. The reversal of 7990442 is 2440997.

It can be written as a sum of positive squares in 2 ways, for example, as 7946761 + 43681 = 2819^2 + 209^2 .

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

It is not an unprimeable number, because it can be changed into a prime (7990441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117473 + ... + 117540.

Almost surely, 2^7990442 is an apocalyptic number.

7990442 is a deficient number, since it is larger than the sum of its proper divisors (4700314).

7990442 is a wasteful number, since it uses less digits than its factorization.

7990442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235032.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 7990442 is about 2826.7369881190. The cubic root of 7990442 is about 199.9203182583.

The spelling of 7990442 in words is "seven million, nine hundred ninety thousand, four hundred forty-two".