7899910797 has 4 divisors (see below), whose sum is σ = 10533214400. Its totient is φ = 5266607196.

The previous prime is 7899910747. The next prime is 7899910819. The reversal of 7899910797 is 7970199987.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7899910797 - 2¹⁴ = 7899894413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7899910747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1316651797 + ... + 1316651802.

It is an arithmetic number, because the mean of its divisors is an integer number (2633303600).

Almost surely, 2^7899910797 is an apocalyptic number.

It is an amenable number.

7899910797 is a deficient number, since it is larger than the sum of its proper divisors (2633303603).

7899910797 is a wasteful number, since it uses less digits than its factorization.

7899910797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633303602.

The product of its (nonzero) digits is 18003384, while the sum is 66.

The square root of 7899910797 is about 88881.4423656592. The cubic root of 7899910797 is about 1991.6242050793.

The spelling of 7899910797 in words is "seven billion, eight hundred ninety-nine million, nine hundred ten thousand, seven hundred ninety-seven".