13959005638 has 32 divisors (see below), whose sum is σ = 22038500160. Its totient is φ = 6621471360.

The previous prime is 13959005617. The next prime is 13959005663. The reversal of 13959005638 is 83650095931.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13959005591 and 13959005600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5457856 + ... + 5460412.

It is an arithmetic number, because the mean of its divisors is an integer number (688703130).

Almost surely, 2^13959005638 is an apocalyptic number.

13959005638 is a deficient number, since it is larger than the sum of its proper divisors (8079494522).

13959005638 is a wasteful number, since it uses less digits than its factorization.

13959005638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192.

The product of its (nonzero) digits is 874800, while the sum is 49.

The spelling of 13959005638 in words is "thirteen billion, nine hundred fifty-nine million, five thousand, six hundred thirty-eight".