12371399 has 4 divisors (see below), whose sum is σ = 12520536. Its totient is φ = 12222264.

The previous prime is 12371377. The next prime is 12371423. The reversal of 12371399 is 99317321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99317321 = 541 ⋅183581.

It is a cyclic number.

It is not a de Polignac number, because 12371399 - 2²⁰ = 11322823 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12371369) 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, 74444 + ... + 74609.

It is an arithmetic number, because the mean of its divisors is an integer number (3130134).

Almost surely, 2^12371399 is an apocalyptic number.

12371399 is a deficient number, since it is larger than the sum of its proper divisors (149137).

12371399 is an equidigital number, since it uses as much as digits as its factorization.

12371399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149136.

The product of its digits is 10206, while the sum is 35.

The square root of 12371399 is about 3517.2999587752. The cubic root of 12371399 is about 231.2808126461.

The spelling of 12371399 in words is "twelve million, three hundred seventy-one thousand, three hundred ninety-nine".