7990089993 has 16 divisors (see below), whose sum is σ = 11941928640. Its totient is φ = 5279585472.

The previous prime is 7990089977. The next prime is 7990090013. The reversal of 7990089993 is 3999800997.

It is not a de Polignac number, because 7990089993 - 2⁴ = 7990089977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7990089993.

It is not an unprimeable number, because it can be changed into a prime (7990081993) 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 15 ways as a sum of consecutive naturals, for example, 1306371 + ... + 1312472.

It is an arithmetic number, because the mean of its divisors is an integer number (746370540).

Almost surely, 2^7990089993 is an apocalyptic number.

It is an amenable number.

7990089993 is a deficient number, since it is larger than the sum of its proper divisors (3951838647).

7990089993 is a wasteful number, since it uses less digits than its factorization.

7990089993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618965 (or 2618959 counting only the distinct ones).

The product of its (nonzero) digits is 9920232, while the sum is 63.

The square root of 7990089993 is about 89387.3033098102. The cubic root of 7990089993 is about 1999.1738248476.

The spelling of 7990089993 in words is "seven billion, nine hundred ninety million, eighty-nine thousand, nine hundred ninety-three".