13864398 has 8 divisors (see below), whose sum is σ = 27728808. Its totient is φ = 4621464.

The previous prime is 13864397. The next prime is 13864457. The reversal of 13864398 is 89346831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

13864398 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13864391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1155361 + ... + 1155372.

It is an arithmetic number, because the mean of its divisors is an integer number (3466101).

Almost surely, 2^13864398 is an apocalyptic number.

13864398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13864398 is a wasteful number, since it uses less digits than its factorization.

13864398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310738.

The product of its digits is 124416, while the sum is 42.

The square root of 13864398 is about 3723.4927151802. The cubic root of 13864398 is about 240.2335573608.

The spelling of 13864398 in words is "thirteen million, eight hundred sixty-four thousand, three hundred ninety-eight".