12152839 has 4 divisors (see below), whose sum is σ = 12278224. Its totient is φ = 12027456.

The previous prime is 12152797. The next prime is 12152849. The reversal of 12152839 is 93825121.

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 12152839 - 2¹⁵ = 12120071 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 12152839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12152849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62547 + ... + 62740.

It is an arithmetic number, because the mean of its divisors is an integer number (3069556).

Almost surely, 2^12152839 is an apocalyptic number.

12152839 is a deficient number, since it is larger than the sum of its proper divisors (125385).

12152839 is an equidigital number, since it uses as much as digits as its factorization.

12152839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125384.

The product of its digits is 4320, while the sum is 31.

The square root of 12152839 is about 3486.0922248271. The cubic root of 12152839 is about 229.9107341053.

The spelling of 12152839 in words is "twelve million, one hundred fifty-two thousand, eight hundred thirty-nine".