2291604479 has 4 divisors (see below), whose sum is σ = 2291704584. Its totient is φ = 2291504376.

The previous prime is 2291604473. The next prime is 2291604481. The reversal of 2291604479 is 9744061922.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2291604479 - 2⁴ = 2291604463 is a prime.

It is a super-2 number, since 2×2291604479² = 10502902176345722882, 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 (2291604473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3104 + ... + 67770.

It is an arithmetic number, because the mean of its divisors is an integer number (572926146).

Almost surely, 2^2291604479 is an apocalyptic number.

2291604479 is a deficient number, since it is larger than the sum of its proper divisors (100105).

2291604479 is an equidigital number, since it uses as much as digits as its factorization.

2291604479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100104.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 2291604479 is about 47870.7058544158. The cubic root of 2291604479 is about 1318.3980564868.

The spelling of 2291604479 in words is "two billion, two hundred ninety-one million, six hundred four thousand, four hundred seventy-nine".