8077921259 has 4 divisors (see below), whose sum is σ = 8079140640. Its totient is φ = 8076701880.

The previous prime is 8077921253. The next prime is 8077921301. The reversal of 8077921259 is 9521297708.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8077921259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8077921253) 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, 599699 + ... + 613020.

It is an arithmetic number, because the mean of its divisors is an integer number (2019785160).

Almost surely, 2^8077921259 is an apocalyptic number.

8077921259 is a deficient number, since it is larger than the sum of its proper divisors (1219381).

8077921259 is a wasteful number, since it uses less digits than its factorization.

8077921259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219380.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 8077921259 is about 89877.2566281370. The cubic root of 8077921259 is about 2006.4724692252.

The spelling of 8077921259 in words is "eight billion, seventy-seven million, nine hundred twenty-one thousand, two hundred fifty-nine".