7919992289 has 4 divisors (see below), whose sum is σ = 8639991600. Its totient is φ = 7199992980.

The previous prime is 7919992271. The next prime is 7919992291. The reversal of 7919992289 is 9822999197.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7919992289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7919992259) 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 3 ways as a sum of consecutive naturals, for example, 359999639 + ... + 359999660.

It is an arithmetic number, because the mean of its divisors is an integer number (2159997900).

Almost surely, 2^7919992289 is an apocalyptic number.

It is an amenable number.

7919992289 is a deficient number, since it is larger than the sum of its proper divisors (719999311).

7919992289 is a wasteful number, since it uses less digits than its factorization.

7919992289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719999310.

The product of its digits is 13226976, while the sum is 65.

The square root of 7919992289 is about 88994.3385221779. The cubic root of 7919992289 is about 1993.3103399217.

The spelling of 7919992289 in words is "seven billion, nine hundred nineteen million, nine hundred ninety-two thousand, two hundred eighty-nine".