2979669791 has 4 divisors (see below), whose sum is σ = 3405336912. Its totient is φ = 2554002672.

The previous prime is 2979669769. The next prime is 2979669827. The reversal of 2979669791 is 1979669792.

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 2979669791 - 2⁶ = 2979669727 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 (2979669731) 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, 212833550 + ... + 212833563.

It is an arithmetic number, because the mean of its divisors is an integer number (851334228).

Almost surely, 2^2979669791 is an apocalyptic number.

2979669791 is a deficient number, since it is larger than the sum of its proper divisors (425667121).

2979669791 is an equidigital number, since it uses as much as digits as its factorization.

2979669791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425667120.

The product of its digits is 23147208, while the sum is 65.

The square root of 2979669791 is about 54586.3516916088. The cubic root of 2979669791 is about 1438.9842681094.

Subtracting from 2979669791 its reverse (1979669792), we obtain a palindrome (999999999).

The spelling of 2979669791 in words is "two billion, nine hundred seventy-nine million, six hundred sixty-nine thousand, seven hundred ninety-one".