2940891049 has 4 divisors (see below), whose sum is σ = 2990736720. Its totient is φ = 2891045380.

The previous prime is 2940891011. The next prime is 2940891059. The reversal of 2940891049 is 9401980492.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2940891049 - 2²⁹ = 2404020137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2940891059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24922747 + ... + 24922864.

It is an arithmetic number, because the mean of its divisors is an integer number (747684180).

Almost surely, 2^2940891049 is an apocalyptic number.

It is an amenable number.

2940891049 is a deficient number, since it is larger than the sum of its proper divisors (49845671).

2940891049 is an equidigital number, since it uses as much as digits as its factorization.

2940891049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49845670.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 2940891049 is about 54229.9829337978. The cubic root of 2940891049 is about 1432.7144634524.

The spelling of 2940891049 in words is "two billion, nine hundred forty million, eight hundred ninety-one thousand, forty-nine".