12509834 has 4 divisors (see below), whose sum is σ = 18764754. Its totient is φ = 6254916.

The previous prime is 12509831. The next prime is 12509837. The reversal of 12509834 is 43890521.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12509831) and next prime (12509837).

It can be written as a sum of positive squares in only one way, i.e., 11539609 + 970225 = 3397^2 + 985^2 .

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 12509834.

It is not an unprimeable number, because it can be changed into a prime (12509831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3127457 + ... + 3127460.

Almost surely, 2^12509834 is an apocalyptic number.

12509834 is a deficient number, since it is larger than the sum of its proper divisors (6254920).

12509834 is an equidigital number, since it uses as much as digits as its factorization.

12509834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6254919.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 12509834 is about 3536.9243701272. The cubic root of 12509834 is about 232.1402862403.

The spelling of 12509834 in words is "twelve million, five hundred nine thousand, eight hundred thirty-four".