13999894377 has 32 divisors (see below), whose sum is σ = 21840952320. Its totient is φ = 7809721920.

The previous prime is 13999894343. The next prime is 13999894379. The reversal of 13999894377 is 77349899931.

It is not a de Polignac number, because 13999894377 - 2²³ = 13991505769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13999894379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2580774 + ... + 2586192.

It is an arithmetic number, because the mean of its divisors is an integer number (682529760).

Almost surely, 2^13999894377 is an apocalyptic number.

It is an amenable number.

13999894377 is a deficient number, since it is larger than the sum of its proper divisors (7841057943).

13999894377 is a wasteful number, since it uses less digits than its factorization.

13999894377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8333.

The product of its digits is 92588832, while the sum is 69.

The spelling of 13999894377 in words is "thirteen billion, nine hundred ninety-nine million, eight hundred ninety-four thousand, three hundred seventy-seven".