2899881 has 10 divisors (see below), whose sum is σ = 4332042. Its totient is φ = 1933200.

The previous prime is 2899873. The next prime is 2899903. The reversal of 2899881 is 1889982.

It can be written as a sum of positive squares in only one way, i.e., 2073600 + 826281 = 1440^2 + 909^2 .

It is not a de Polignac number, because 2899881 - 2³ = 2899873 is a prime.

It is a super-2 number, since 2×2899881² = 16818619628322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2899861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 17820 + ... + 17981.

2^2899881 is an apocalyptic number.

It is an amenable number.

2899881 is a deficient number, since it is larger than the sum of its proper divisors (1432161).

2899881 is an equidigital number, since it uses as much as digits as its factorization.

2899881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35813 (or 35804 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 2899881 is about 1702.9036966311. The cubic root of 2899881 is about 142.6023641228.

The spelling of 2899881 in words is "two million, eight hundred ninety-nine thousand, eight hundred eighty-one".