2290919 has 4 divisors (see below), whose sum is σ = 2295240. Its totient is φ = 2286600.

The previous prime is 2290907. The next prime is 2290927. The reversal of 2290919 is 9190922.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2290919 is a prime.

It is a super-2 number, since 2×2290919² = 10496619729122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2290969) 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 3 ways as a sum of consecutive naturals, for example, 1232 + ... + 2469.

It is an arithmetic number, because the mean of its divisors is an integer number (573810).

2^2290919 is an apocalyptic number.

2290919 is a deficient number, since it is larger than the sum of its proper divisors (4321).

2290919 is an equidigital number, since it uses as much as digits as its factorization.

2290919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4320.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 2290919 is about 1513.5782107311. The cubic root of 2290919 is about 131.8266587566.

The spelling of 2290919 in words is "two million, two hundred ninety thousand, nine hundred nineteen".