13799449905 has 8 divisors (see below), whose sum is σ = 22079119872. Its totient is φ = 7359706608.

The previous prime is 13799449901. The next prime is 13799449919. The reversal of 13799449905 is 50994499731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13799449905 - 2² = 13799449901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13799449901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459981649 + ... + 459981678.

It is an arithmetic number, because the mean of its divisors is an integer number (2759889984).

Almost surely, 2^13799449905 is an apocalyptic number.

13799449905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13799449905 is a deficient number, since it is larger than the sum of its proper divisors (8279669967).

13799449905 is an equidigital number, since it uses as much as digits as its factorization.

13799449905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919963335.

The product of its (nonzero) digits is 11022480, while the sum is 60.

The spelling of 13799449905 in words is "thirteen billion, seven hundred ninety-nine million, four hundred forty-nine thousand, nine hundred five".