12390371 has 4 divisors (see below), whose sum is σ = 14160432. Its totient is φ = 10620312.

The previous prime is 12390349. The next prime is 12390379. The reversal of 12390371 is 17309321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12390371 - 2¹⁴ = 12373987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12390371.

It is not an unprimeable number, because it can be changed into a prime (12390379) 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, 885020 + ... + 885033.

It is an arithmetic number, because the mean of its divisors is an integer number (3540108).

Almost surely, 2^12390371 is an apocalyptic number.

12390371 is a deficient number, since it is larger than the sum of its proper divisors (1770061).

12390371 is an equidigital number, since it uses as much as digits as its factorization.

12390371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770060.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 12390371 is about 3519.9958806794. The cubic root of 12390371 is about 231.3989781693.

Adding to 12390371 its reverse (17309321), we get a palindrome (29699692).

The spelling of 12390371 in words is "twelve million, three hundred ninety thousand, three hundred seventy-one".