12398838 has 8 divisors (see below), whose sum is σ = 24797688. Its totient is φ = 4132944.

The previous prime is 12398833. The next prime is 12398843. The reversal of 12398838 is 83889321.

It is an interprime number because it is at equal distance from previous prime (12398833) and next prime (12398843).

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

12398838 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12398838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12398833) 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, 1033231 + ... + 1033242.

It is an arithmetic number, because the mean of its divisors is an integer number (3099711).

Almost surely, 2^12398838 is an apocalyptic number.

12398838 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.

12398838 is a wasteful number, since it uses less digits than its factorization.

12398838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066478.

The product of its digits is 82944, while the sum is 42.

The square root of 12398838 is about 3521.1983755534. The cubic root of 12398838 is about 231.4516752469.

The spelling of 12398838 in words is "twelve million, three hundred ninety-eight thousand, eight hundred thirty-eight".