13903913779 has 4 divisors (see below), whose sum is σ = 15890187184. Its totient is φ = 11917640376.

The previous prime is 13903913759. The next prime is 13903913827. The reversal of 13903913779 is 97731930931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13903913779 - 2²¹ = 13901816627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13903913719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993136692 + ... + 993136705.

It is an arithmetic number, because the mean of its divisors is an integer number (3972546796).

Almost surely, 2^13903913779 is an apocalyptic number.

13903913779 is a deficient number, since it is larger than the sum of its proper divisors (1986273405).

13903913779 is an equidigital number, since it uses as much as digits as its factorization.

13903913779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986273404.

The product of its (nonzero) digits is 964467, while the sum is 52.

The spelling of 13903913779 in words is "thirteen billion, nine hundred three million, nine hundred thirteen thousand, seven hundred seventy-nine".