12009577 has 4 divisors (see below), whose sum is σ = 12641680. Its totient is φ = 11377476.

The previous prime is 12009563. The next prime is 12009583. The reversal of 12009577 is 77590021.

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: 77590021 = 73 ⋅1062877.

It is a cyclic number.

It is not a de Polignac number, because 12009577 - 2¹¹ = 12007529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12009077) 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, 316023 + ... + 316060.

It is an arithmetic number, because the mean of its divisors is an integer number (3160420).

Almost surely, 2^12009577 is an apocalyptic number.

It is an amenable number.

12009577 is a deficient number, since it is larger than the sum of its proper divisors (632103).

12009577 is an equidigital number, since it uses as much as digits as its factorization.

12009577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632102.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 12009577 is about 3465.4836603279. The cubic root of 12009577 is about 229.0037374726.

Adding to 12009577 its reverse (77590021), we get a palindrome (89599598).

The spelling of 12009577 in words is "twelve million, nine thousand, five hundred seventy-seven".