12655489 has 8 divisors (see below), whose sum is σ = 15778368. Its totient is φ = 9861360.

The previous prime is 12655481. The next prime is 12655547. The reversal of 12655489 is 98455621.

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 12655489 - 2³ = 12655481 is a prime.

It is a super-2 number, since 2×12655489² = 320322803658242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12655481) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82102 + ... + 82255.

It is an arithmetic number, because the mean of its divisors is an integer number (1972296).

Almost surely, 2^12655489 is an apocalyptic number.

It is an amenable number.

12655489 is a deficient number, since it is larger than the sum of its proper divisors (3122879).

12655489 is a wasteful number, since it uses less digits than its factorization.

12655489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164375.

The product of its digits is 86400, while the sum is 40.

The square root of 12655489 is about 3557.4554108239. The cubic root of 12655489 is about 233.0377670303.

The spelling of 12655489 in words is "twelve million, six hundred fifty-five thousand, four hundred eighty-nine".