13898123279 has 2 divisors, whose sum is σ = 13898123280. Its totient is φ = 13898123278.

The previous prime is 13898123263. The next prime is 13898123311. The reversal of 13898123279 is 97232189831.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13898123279 - 2⁴ = 13898123263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13898123279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13898123219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6949061639 + 6949061640.

It is an arithmetic number, because the mean of its divisors is an integer number (6949061640).

Almost surely, 2^13898123279 is an apocalyptic number.

13898123279 is a deficient number, since it is larger than the sum of its proper divisors (1).

13898123279 is an equidigital number, since it uses as much as digits as its factorization.

13898123279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 53.

The spelling of 13898123279 in words is "thirteen billion, eight hundred ninety-eight million, one hundred twenty-three thousand, two hundred seventy-nine".