7990458 has 16 divisors (see below), whose sum is σ = 18264000. Its totient is φ = 2282976.

The previous prime is 7990441. The next prime is 7990471. The reversal of 7990458 is 8540997.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 190249 = 7990458 / (7 + 9 + 9 + 0 + 4 + 5 + 8).

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, 95083 + ... + 95166.

It is an arithmetic number, because the mean of its divisors is an integer number (1141500).

Almost surely, 2^7990458 is an apocalyptic number.

7990458 is an abundant number, since it is smaller than the sum of its proper divisors (10273542).

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

7990458 is a wasteful number, since it uses less digits than its factorization.

7990458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190261.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 7990458 is about 2826.7398182358. The cubic root of 7990458 is about 199.9204516979.

It can be divided in two parts, 7990 and 458, that added together give a palindrome (8448).

The spelling of 7990458 in words is "seven million, nine hundred ninety thousand, four hundred fifty-eight".