13479889 has 2 divisors, whose sum is σ = 13479890. Its totient is φ = 13479888.

The previous prime is 13479871. The next prime is 13479913. The reversal of 13479889 is 98897431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10452289 + 3027600 = 3233^2 + 1740^2 .

It is a cyclic number.

It is not a de Polignac number, because 13479889 - 2¹⁵ = 13447121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13470889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6739944 + 6739945.

It is an arithmetic number, because the mean of its divisors is an integer number (6739945).

Almost surely, 2^13479889 is an apocalyptic number.

It is an amenable number.

13479889 is a deficient number, since it is larger than the sum of its proper divisors (1).

13479889 is an equidigital number, since it uses as much as digits as its factorization.

13479889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 49.

The square root of 13479889 is about 3671.4968337178. The cubic root of 13479889 is about 237.9918611721.

It can be divided in two parts, 1347 and 9889, that added together give a square (11236 = 106²).

The spelling of 13479889 in words is "thirteen million, four hundred seventy-nine thousand, eight hundred eighty-nine".