8091629779 has 4 divisors (see below), whose sum is σ = 8094829320. Its totient is φ = 8088430240.

The previous prime is 8091629737. The next prime is 8091629803. The reversal of 8091629779 is 9779261908.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8091629779 - 2⁹ = 8091629267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8091629729) 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, 1595974 + ... + 1601035.

It is an arithmetic number, because the mean of its divisors is an integer number (2023707330).

Almost surely, 2^8091629779 is an apocalyptic number.

8091629779 is a deficient number, since it is larger than the sum of its proper divisors (3199541).

8091629779 is a wasteful number, since it uses less digits than its factorization.

8091629779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3199540.

The product of its (nonzero) digits is 3429216, while the sum is 58.

The square root of 8091629779 is about 89953.4867528769. The cubic root of 8091629779 is about 2007.6068461820.

The spelling of 8091629779 in words is "eight billion, ninety-one million, six hundred twenty-nine thousand, seven hundred seventy-nine".