2291297479 has 2 divisors, whose sum is σ = 2291297480. Its totient is φ = 2291297478.

The previous prime is 2291297461. The next prime is 2291297507. The reversal of 2291297479 is 9747921922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2291297479 - 2⁹ = 2291296967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2291297579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145648739 + 1145648740.

It is an arithmetic number, because the mean of its divisors is an integer number (1145648740).

Almost surely, 2^2291297479 is an apocalyptic number.

2291297479 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291297479 is an equidigital number, since it uses as much as digits as its factorization.

2291297479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 52.

The square root of 2291297479 is about 47867.4991930851. The cubic root of 2291297479 is about 1318.3391797940.

The spelling of 2291297479 in words is "two billion, two hundred ninety-one million, two hundred ninety-seven thousand, four hundred seventy-nine".