2398442779 has 2 divisors, whose sum is σ = 2398442780. Its totient is φ = 2398442778.

The previous prime is 2398442747. The next prime is 2398442791. The reversal of 2398442779 is 9772448932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2398442779 - 2⁵ = 2398442747 is a prime.

It is not a weakly prime, because it can be changed into another prime (2398445779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1199221389 + 1199221390.

It is an arithmetic number, because the mean of its divisors is an integer number (1199221390).

Almost surely, 2^2398442779 is an apocalyptic number.

2398442779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2398442779 is an equidigital number, since it uses as much as digits as its factorization.

2398442779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 55.

The square root of 2398442779 is about 48973.8989564850. The cubic root of 2398442779 is about 1338.5762666665.

The spelling of 2398442779 in words is "two billion, three hundred ninety-eight million, four hundred forty-two thousand, seven hundred seventy-nine".