13479905 has 4 divisors (see below), whose sum is σ = 16175892. Its totient is φ = 10783920.

The previous prime is 13479889. The next prime is 13479913. The reversal of 13479905 is 50997431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50997431 = 5849 ⋅8719.

It can be written as a sum of positive squares in 2 ways, for example, as 3701776 + 9778129 = 1924^2 + 3127^2 .

It is not a de Polignac number, because 13479905 - 2⁴ = 13479889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1347986 + ... + 1347995.

It is an arithmetic number, because the mean of its divisors is an integer number (4043973).

Almost surely, 2^13479905 is an apocalyptic number.

It is an amenable number.

13479905 is a deficient number, since it is larger than the sum of its proper divisors (2695987).

13479905 is an equidigital number, since it uses as much as digits as its factorization.

13479905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695986.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 13479905 is about 3671.4990126650. The cubic root of 13479905 is about 237.9919553339.

The spelling of 13479905 in words is "thirteen million, four hundred seventy-nine thousand, nine hundred five".