7990099 has 4 divisors (see below), whose sum is σ = 8604736. Its totient is φ = 7375464.

The previous prime is 7990093. The next prime is 7990111. The reversal of 7990099 is 9900997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9900997 = 31 ⋅319387.

It is a cyclic number.

It is not a de Polignac number, because 7990099 - 2³ = 7990091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7990091) 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, 307299 + ... + 307324.

It is an arithmetic number, because the mean of its divisors is an integer number (2151184).

Almost surely, 2^7990099 is an apocalyptic number.

7990099 is a deficient number, since it is larger than the sum of its proper divisors (614637).

7990099 is a wasteful number, since it uses less digits than its factorization.

7990099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614636.

The product of its (nonzero) digits is 45927, while the sum is 43.

The square root of 7990099 is about 2826.6763168074. The cubic root of 7990099 is about 199.9174576051.

The spelling of 7990099 in words is "seven million, nine hundred ninety thousand, ninety-nine".