13398261 has 16 divisors (see below), whose sum is σ = 19569600. Its totient is φ = 8115968.

The previous prime is 13398257. The next prime is 13398263. The reversal of 13398261 is 16289331.

It is a cyclic number.

It is not a de Polignac number, because 13398261 - 2² = 13398257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13398263) 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 15 ways as a sum of consecutive naturals, for example, 3051 + ... + 6008.

It is an arithmetic number, because the mean of its divisors is an integer number (1223100).

Almost surely, 2^13398261 is an apocalyptic number.

It is an amenable number.

13398261 is a deficient number, since it is larger than the sum of its proper divisors (6171339).

13398261 is a wasteful number, since it uses less digits than its factorization.

13398261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9108.

The product of its digits is 7776, while the sum is 33.

The square root of 13398261 is about 3660.3635065387. The cubic root of 13398261 is about 237.5104985202.

The spelling of 13398261 in words is "thirteen million, three hundred ninety-eight thousand, two hundred sixty-one".