12390901 has 4 divisors (see below), whose sum is σ = 12398400. Its totient is φ = 12383404.

The previous prime is 12390887. The next prime is 12390919. The reversal of 12390901 is 10909321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10909321 = 41 ⋅266081.

It is a cyclic number.

It is not a de Polignac number, because 12390901 - 2¹³ = 12382709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12390971) 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, 61 + ... + 4978.

It is an arithmetic number, because the mean of its divisors is an integer number (3099600).

Almost surely, 2^12390901 is an apocalyptic number.

It is an amenable number.

12390901 is a deficient number, since it is larger than the sum of its proper divisors (7499).

12390901 is an equidigital number, since it uses as much as digits as its factorization.

12390901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7498.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 12390901 is about 3520.0711640534. The cubic root of 12390901 is about 231.4022774977.

The spelling of 12390901 in words is "twelve million, three hundred ninety thousand, nine hundred one".