12291839 has 8 divisors (see below), whose sum is σ = 14179968. Its totient is φ = 10436760.

The previous prime is 12291827. The next prime is 12291857. The reversal of 12291839 is 93819221.

12291839 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12291839 - 2¹⁶ = 12226303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12291799 and 12291808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12291809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7457 + ... + 8954.

It is an arithmetic number, because the mean of its divisors is an integer number (1772496).

Almost surely, 2^12291839 is an apocalyptic number.

12291839 is a deficient number, since it is larger than the sum of its proper divisors (1888129).

12291839 is a wasteful number, since it uses less digits than its factorization.

12291839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16525.

The product of its digits is 7776, while the sum is 35.

The square root of 12291839 is about 3505.9719051926. The cubic root of 12291839 is about 230.7839599801.

The spelling of 12291839 in words is "twelve million, two hundred ninety-one thousand, eight hundred thirty-nine".