13261899 has 12 divisors (see below), whose sum is σ = 20569704. Its totient is φ = 7578144.

The previous prime is 13261891. The next prime is 13261907. The reversal of 13261899 is 99816231.

13261899 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13261891) and next prime (13261907).

It is not a de Polignac number, because 13261899 - 2³ = 13261891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13261891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44962 + ... + 45255.

It is an arithmetic number, because the mean of its divisors is an integer number (1714142).

Almost surely, 2^13261899 is an apocalyptic number.

13261899 is a deficient number, since it is larger than the sum of its proper divisors (7307805).

13261899 is an equidigital number, since it uses as much as digits as its factorization.

13261899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90234 (or 90227 counting only the distinct ones).

The product of its digits is 23328, while the sum is 39.

The square root of 13261899 is about 3641.6890312052. The cubic root of 13261899 is about 236.7019879394.

The spelling of 13261899 in words is "thirteen million, two hundred sixty-one thousand, eight hundred ninety-nine".