2290191979 has 4 divisors (see below), whose sum is σ = 2297111320. Its totient is φ = 2283272640.

The previous prime is 2290191971. The next prime is 2290192033. The reversal of 2290191979 is 9791910922.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2290191979 - 2³ = 2290191971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2290191971) 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, 3459174 + ... + 3459835.

It is an arithmetic number, because the mean of its divisors is an integer number (574277830).

Almost surely, 2^2290191979 is an apocalyptic number.

2290191979 is a deficient number, since it is larger than the sum of its proper divisors (6919341).

2290191979 is an equidigital number, since it uses as much as digits as its factorization.

2290191979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6919340.

The product of its (nonzero) digits is 183708, while the sum is 49.

The square root of 2290191979 is about 47855.9502987873. The cubic root of 2290191979 is about 1318.1271225890.

The spelling of 2290191979 in words is "two billion, two hundred ninety million, one hundred ninety-one thousand, nine hundred seventy-nine".