2889961 has 4 divisors (see below), whose sum is σ = 2899024. Its totient is φ = 2880900.

The previous prime is 2889947. The next prime is 2889979. The reversal of 2889961 is 1699882.

It is a happy number.

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 2889961 - 2⁷ = 2889833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2889361) 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, 4035 + ... + 4696.

It is an arithmetic number, because the mean of its divisors is an integer number (724756).

2^2889961 is an apocalyptic number.

It is an amenable number.

2889961 is a deficient number, since it is larger than the sum of its proper divisors (9063).

2889961 is an equidigital number, since it uses as much as digits as its factorization.

2889961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9062.

The product of its digits is 62208, while the sum is 43.

The square root of 2889961 is about 1699.9885293731. The cubic root of 2889961 is about 142.4395722039.

The spelling of 2889961 in words is "two million, eight hundred eighty-nine thousand, nine hundred sixty-one".