2290961 has 4 divisors (see below), whose sum is σ = 2390592. Its totient is φ = 2191332.

The previous prime is 2290943. The next prime is 2290969. The reversal of 2290961 is 1690922.

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 a de Polignac number, because none of the positive numbers 2^k-2290961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2290969) 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, 49781 + ... + 49826.

It is an arithmetic number, because the mean of its divisors is an integer number (597648).

2^2290961 is an apocalyptic number.

It is an amenable number.

2290961 is a deficient number, since it is larger than the sum of its proper divisors (99631).

2290961 is an equidigital number, since it uses as much as digits as its factorization.

2290961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99630.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 2290961 is about 1513.5920850744. The cubic root of 2290961 is about 131.8274643555.

The spelling of 2290961 in words is "two million, two hundred ninety thousand, nine hundred sixty-one".