279844445149 has 2 divisors, whose sum is σ = 279844445150. Its totient is φ = 279844445148.

The previous prime is 279844445141. The next prime is 279844445207. The reversal of 279844445149 is 941544448972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278553839524 + 1290605625 = 527782^2 + 35925^2 .

It is a cyclic number.

It is not a de Polignac number, because 279844445149 - 2³ = 279844445141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279844445141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139922222574 + 139922222575.

It is an arithmetic number, because the mean of its divisors is an integer number (139922222575).

Almost surely, 2^279844445149 is an apocalyptic number.

It is an amenable number.

279844445149 is a deficient number, since it is larger than the sum of its proper divisors (1).

279844445149 is an equidigital number, since it uses as much as digits as its factorization.

279844445149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46448640, while the sum is 61.

The spelling of 279844445149 in words is "two hundred seventy-nine billion, eight hundred forty-four million, four hundred forty-five thousand, one hundred forty-nine".