12453239 has 4 divisors (see below), whose sum is σ = 12551424. Its totient is φ = 12355056.

The previous prime is 12453191. The next prime is 12453241. The reversal of 12453239 is 93235421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93235421 = 89 ⋅1047589.

It is a cyclic number.

It is not a de Polignac number, because 12453239 - 2⁸ = 12452983 is a prime.

It is a super-2 number, since 2×12453239² = 310166323182242, 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 (12453269) 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, 48902 + ... + 49155.

It is an arithmetic number, because the mean of its divisors is an integer number (3137856).

Almost surely, 2^12453239 is an apocalyptic number.

12453239 is a deficient number, since it is larger than the sum of its proper divisors (98185).

12453239 is an equidigital number, since it uses as much as digits as its factorization.

12453239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98184.

The product of its digits is 6480, while the sum is 29.

The square root of 12453239 is about 3528.9147056850. The cubic root of 12453239 is about 231.7896862857.

The spelling of 12453239 in words is "twelve million, four hundred fifty-three thousand, two hundred thirty-nine".