13899784079 has 2 divisors, whose sum is σ = 13899784080. Its totient is φ = 13899784078.

The previous prime is 13899784033. The next prime is 13899784109. The reversal of 13899784079 is 97048799831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13899784079 - 2²⁸ = 13631348623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13899724079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6949892039 + 6949892040.

It is an arithmetic number, because the mean of its divisors is an integer number (6949892040).

Almost surely, 2^13899784079 is an apocalyptic number.

13899784079 is a deficient number, since it is larger than the sum of its proper divisors (1).

13899784079 is an equidigital number, since it uses as much as digits as its factorization.

13899784079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27433728, while the sum is 65.

The spelling of 13899784079 in words is "thirteen billion, eight hundred ninety-nine million, seven hundred eighty-four thousand, seventy-nine".