2909049931 has 4 divisors (see below), whose sum is σ = 2912646600. Its totient is φ = 2905453264.

The previous prime is 2909049901. The next prime is 2909049953. The reversal of 2909049931 is 1399409092.

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 2909049931 - 2⁹ = 2909049419 is a prime.

It is a super-2 number, since 2×2909049931² = 16925143002102209522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2909049901) 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, 1797121 + ... + 1798738.

It is an arithmetic number, because the mean of its divisors is an integer number (728161650).

Almost surely, 2^2909049931 is an apocalyptic number.

2909049931 is a deficient number, since it is larger than the sum of its proper divisors (3596669).

2909049931 is an equidigital number, since it uses as much as digits as its factorization.

2909049931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596668.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 2909049931 is about 53935.6091186518. The cubic root of 2909049931 is about 1427.5250081344.

The spelling of 2909049931 in words is "two billion, nine hundred nine million, forty-nine thousand, nine hundred thirty-one".