8556149 has 4 divisors (see below), whose sum is σ = 9778464. Its totient is φ = 7333836.

The previous prime is 8556133. The next prime is 8556157. The reversal of 8556149 is 9416558.

8556149 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 8556149 - 2⁴ = 8556133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8556199) 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, 611147 + ... + 611160.

It is an arithmetic number, because the mean of its divisors is an integer number (2444616).

Almost surely, 2^8556149 is an apocalyptic number.

It is an amenable number.

8556149 is a deficient number, since it is larger than the sum of its proper divisors (1222315).

8556149 is a wasteful number, since it uses less digits than its factorization.

8556149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222314.

The product of its digits is 43200, while the sum is 38.

The square root of 8556149 is about 2925.0895712781. The cubic root of 8556149 is about 204.5311434447.

The spelling of 8556149 in words is "eight million, five hundred fifty-six thousand, one hundred forty-nine".