2399791 has 2 divisors, whose sum is σ = 2399792. Its totient is φ = 2399790.

The previous prime is 2399759. The next prime is 2399807. The reversal of 2399791 is 1979932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2399791 - 2⁵ = 2399759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2399711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1199895 + 1199896.

It is an arithmetic number, because the mean of its divisors is an integer number (1199896).

2^2399791 is an apocalyptic number.

2399791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2399791 is an equidigital number, since it uses as much as digits as its factorization.

2399791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30618, while the sum is 40.

The square root of 2399791 is about 1549.1258825544. The cubic root of 2399791 is about 133.8827034734.

The spelling of 2399791 in words is "two million, three hundred ninety-nine thousand, seven hundred ninety-one".