12140689 has 4 divisors (see below), whose sum is σ = 13244400. Its totient is φ = 11036980.

The previous prime is 12140683. The next prime is 12140693. The reversal of 12140689 is 98604121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12140689 - 2²³ = 3752081 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 12140689.

It is not an unprimeable number, because it can be changed into a prime (12140683) 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, 551839 + ... + 551860.

It is an arithmetic number, because the mean of its divisors is an integer number (3311100).

Almost surely, 2^12140689 is an apocalyptic number.

It is an amenable number.

12140689 is a deficient number, since it is larger than the sum of its proper divisors (1103711).

12140689 is a wasteful number, since it uses less digits than its factorization.

12140689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103710.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 12140689 is about 3484.3491501283. The cubic root of 12140689 is about 229.8340895491.

The spelling of 12140689 in words is "twelve million, one hundred forty thousand, six hundred eighty-nine".