7990749 has 24 divisors (see below), whose sum is σ = 12536160. Its totient is φ = 4875552.

The previous prime is 7990711. The next prime is 7990751. The reversal of 7990749 is 9470997.

It is not a de Polignac number, because 7990749 - 2⁹ = 7990237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7990709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18862 + ... + 19280.

It is an arithmetic number, because the mean of its divisors is an integer number (522340).

Almost surely, 2^7990749 is an apocalyptic number.

It is an amenable number.

7990749 is a deficient number, since it is larger than the sum of its proper divisors (4545411).

7990749 is a wasteful number, since it uses less digits than its factorization.

7990749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 7990749 is about 2826.7912904917. The cubic root of 7990749 is about 199.9228785986.

The spelling of 7990749 in words is "seven million, nine hundred ninety thousand, seven hundred forty-nine".