12090639 has 8 divisors (see below), whose sum is σ = 17586432. Its totient is φ = 7327640.

The previous prime is 12090623. The next prime is 12090641. The reversal of 12090639 is 93609021.

12090639 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 12090639 - 2⁴ = 12090623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12090649) 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, 183159 + ... + 183224.

It is an arithmetic number, because the mean of its divisors is an integer number (2198304).

Almost surely, 2^12090639 is an apocalyptic number.

12090639 is a deficient number, since it is larger than the sum of its proper divisors (5495793).

12090639 is a wasteful number, since it uses less digits than its factorization.

12090639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366397.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 12090639 is about 3477.1596166987. The cubic root of 12090639 is about 229.5178241433.

The spelling of 12090639 in words is "twelve million, ninety thousand, six hundred thirty-nine".