12438997 has 8 divisors (see below), whose sum is σ = 12776544. Its totient is φ = 12103728.

The previous prime is 12438983. The next prime is 12439003. The reversal of 12438997 is 79983421.

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

It is a cyclic number.

It is not a de Polignac number, because 12438997 - 2⁷ = 12438869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12438947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18723 + ... + 19375.

It is an arithmetic number, because the mean of its divisors is an integer number (1597068).

Almost surely, 2^12438997 is an apocalyptic number.

It is an amenable number.

12438997 is a deficient number, since it is larger than the sum of its proper divisors (337547).

12438997 is an equidigital number, since it uses as much as digits as its factorization.

12438997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139.

The product of its digits is 108864, while the sum is 43.

The square root of 12438997 is about 3526.8962275633. The cubic root of 12438997 is about 231.7012913990.

The spelling of 12438997 in words is "twelve million, four hundred thirty-eight thousand, nine hundred ninety-seven".