13391898 has 48 divisors (see below), whose sum is σ = 29725056. Its totient is φ = 4018560.

The previous prime is 13391867. The next prime is 13391909. The reversal of 13391898 is 89819331.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47518 + ... + 47798.

It is an arithmetic number, because the mean of its divisors is an integer number (619272).

Almost surely, 2^13391898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13391898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14862528).

13391898 is an abundant number, since it is smaller than the sum of its proper divisors (16333158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13391898 is a wasteful number, since it uses less digits than its factorization.

13391898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 346 counting only the distinct ones).

The product of its digits is 46656, while the sum is 42.

The square root of 13391898 is about 3659.4942273489. The cubic root of 13391898 is about 237.4728936747.

The spelling of 13391898 in words is "thirteen million, three hundred ninety-one thousand, eight hundred ninety-eight".