2899991149 has 6 divisors (see below), whose sum is σ = 3187593710. Its totient is φ = 2636355480.

The previous prime is 2899991141. The next prime is 2899991153. The reversal of 2899991149 is 9411999982.

It can be written as a sum of positive squares in only one way, i.e., 2889815049 + 10176100 = 53757^2 + 3190^2 .

It is not a de Polignac number, because 2899991149 - 2³ = 2899991141 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 (2899991141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11983314 + ... + 11983555.

Almost surely, 2^2899991149 is an apocalyptic number.

It is an amenable number.

2899991149 is a deficient number, since it is larger than the sum of its proper divisors (287602561).

2899991149 is a wasteful number, since it uses less digits than its factorization.

2899991149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23966891 (or 23966880 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 61.

The square root of 2899991149 is about 53851.5658918104. The cubic root of 2899991149 is about 1426.0416963469.

The spelling of 2899991149 in words is "two billion, eight hundred ninety-nine million, nine hundred ninety-one thousand, one hundred forty-nine".