2899961 has 4 divisors (see below), whose sum is σ = 2943312. Its totient is φ = 2856612.

The previous prime is 2899943. The next prime is 2899991. The reversal of 2899961 is 1699982.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1699982 = 2 ⋅849991.

It is not a de Polignac number, because 2899961 - 2¹⁰ = 2898937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2899921) 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, 21575 + ... + 21708.

It is an arithmetic number, because the mean of its divisors is an integer number (735828).

2^2899961 is an apocalyptic number.

It is an amenable number.

2899961 is a deficient number, since it is larger than the sum of its proper divisors (43351).

2899961 is an equidigital number, since it uses as much as digits as its factorization.

2899961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43350.

The product of its digits is 69984, while the sum is 44.

The square root of 2899961 is about 1702.9271857599. The cubic root of 2899961 is about 142.6036754507.

The spelling of 2899961 in words is "two million, eight hundred ninety-nine thousand, nine hundred sixty-one".