12089477 has 4 divisors (see below), whose sum is σ = 12132480. Its totient is φ = 12046476.

The previous prime is 12089447. The next prime is 12089479. The reversal of 12089477 is 77498021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 77498021 = 599 ⋅129379.

It is a cyclic number.

It is not a de Polignac number, because 12089477 - 2¹⁴ = 12073093 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 12089477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12089479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21077 + ... + 21642.

It is an arithmetic number, because the mean of its divisors is an integer number (3033120).

Almost surely, 2^12089477 is an apocalyptic number.

It is an amenable number.

12089477 is a deficient number, since it is larger than the sum of its proper divisors (43003).

12089477 is an equidigital number, since it uses as much as digits as its factorization.

12089477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43002.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 12089477 is about 3476.9925222813. The cubic root of 12089477 is about 229.5104711199.

The spelling of 12089477 in words is "twelve million, eighty-nine thousand, four hundred seventy-seven".