79849760929 has 3 divisors (see below), whose sum is σ = 79850043507. Its totient is φ = 79849478352.

The previous prime is 79849760923. The next prime is 79849760953. The reversal of 79849760929 is 92906794897.

The square root of 79849760929 is 282577.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 50829957025 + 29019803904 = 225455^2 + 170352^2 .

It is a de Polignac number, because none of the positive numbers 2^k-79849760929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79849760923) 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 2 ways as a sum of consecutive naturals, for example, 141289 + ... + 423865.

It is an arithmetic number, because the mean of its divisors is an integer number (26616681169).

Almost surely, 2^79849760929 is an apocalyptic number.

79849760929 is the 282577-th square number.

79849760929 is the 141289-th centered octagonal number.

It is an amenable number.

79849760929 is a deficient number, since it is larger than the sum of its proper divisors (282578).

79849760929 is an frugal number, since it uses more digits than its factorization.

79849760929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565154 (or 282577 counting only the distinct ones).

The product of its (nonzero) digits is 123451776, while the sum is 70.

The spelling of 79849760929 in words is "seventy-nine billion, eight hundred forty-nine million, seven hundred sixty thousand, nine hundred twenty-nine".