12461539 has 8 divisors (see below), whose sum is σ = 12692160. Its totient is φ = 12232896.

The previous prime is 12461509. The next prime is 12461543. The reversal of 12461539 is 93516421.

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 12461539 - 2¹³ = 12453347 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 12461539.

It is not an unprimeable number, because it can be changed into a prime (12461509) 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, 18069 + ... + 18745.

It is an arithmetic number, because the mean of its divisors is an integer number (1586520).

Almost surely, 2^12461539 is an apocalyptic number.

12461539 is a deficient number, since it is larger than the sum of its proper divisors (230621).

12461539 is an equidigital number, since it uses as much as digits as its factorization.

12461539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989.

The product of its digits is 6480, while the sum is 31.

The square root of 12461539 is about 3530.0905087547. The cubic root of 12461539 is about 231.8411702716.

The spelling of 12461539 in words is "twelve million, four hundred sixty-one thousand, five hundred thirty-nine".