12464391 has 4 divisors (see below), whose sum is σ = 16619192. Its totient is φ = 8309592.

The previous prime is 12464377. The next prime is 12464401. The reversal of 12464391 is 19346421.

12464391 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19346421 = 3 ⋅6448807.

It is not a de Polignac number, because 12464391 - 2⁶ = 12464327 is a prime.

It is a super-2 number, since 2×12464391² = 310722086001762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12464311) 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, 2077396 + ... + 2077401.

It is an arithmetic number, because the mean of its divisors is an integer number (4154798).

Almost surely, 2^12464391 is an apocalyptic number.

12464391 is a deficient number, since it is larger than the sum of its proper divisors (4154801).

12464391 is an equidigital number, since it uses as much as digits as its factorization.

12464391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154800.

The product of its digits is 5184, while the sum is 30.

The square root of 12464391 is about 3530.4944412929. The cubic root of 12464391 is about 231.8588556362.

The spelling of 12464391 in words is "twelve million, four hundred sixty-four thousand, three hundred ninety-one".