2149140899 has 4 divisors (see below), whose sum is σ = 2153783136. Its totient is φ = 2144498664.

The previous prime is 2149140853. The next prime is 2149140943. The reversal of 2149140899 is 9980419412.

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 2149140899 - 2²⁴ = 2132363683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2109140899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2320424 + ... + 2321349.

It is an arithmetic number, because the mean of its divisors is an integer number (538445784).

Almost surely, 2^2149140899 is an apocalyptic number.

2149140899 is a deficient number, since it is larger than the sum of its proper divisors (4642237).

2149140899 is an equidigital number, since it uses as much as digits as its factorization.

2149140899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642236.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 2149140899 is about 46358.8276275404. The cubic root of 2149140899 is about 1290.4909492801.

The spelling of 2149140899 in words is "two billion, one hundred forty-nine million, one hundred forty thousand, eight hundred ninety-nine".