13398861 has 32 divisors (see below), whose sum is σ = 21150720. Its totient is φ = 7387776.

The previous prime is 13398859. The next prime is 13398863. The reversal of 13398861 is 16889331.

13398861 is digitally balanced in base 3, because in such base 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 (13398859) and next prime (13398863).

It is not a de Polignac number, because 13398861 - 2¹ = 13398859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13398863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125170 + ... + 125276.

It is an arithmetic number, because the mean of its divisors is an integer number (660960).

Almost surely, 2^13398861 is an apocalyptic number.

It is an amenable number.

13398861 is a deficient number, since it is larger than the sum of its proper divisors (7751859).

13398861 is a wasteful number, since it uses less digits than its factorization.

13398861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273.

The product of its digits is 31104, while the sum is 39.

The square root of 13398861 is about 3660.4454646942. The cubic root of 13398861 is about 237.5140438602.

The spelling of 13398861 in words is "thirteen million, three hundred ninety-eight thousand, eight hundred sixty-one".