8620444 has 12 divisors (see below), whose sum is σ = 17240944. Its totient is φ = 3694464.

The previous prime is 8620429. The next prime is 8620499. The reversal of 8620444 is 4440268.

8620444 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 307873 = 8620444 / (8 + 6 + 2 + 0 + 4 + 4 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153909 + ... + 153964.

Almost surely, 2^8620444 is an apocalyptic number.

It is an amenable number.

8620444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8620444 is a wasteful number, since it uses less digits than its factorization.

8620444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307884 (or 307882 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 8620444 is about 2936.0592637071. The cubic root of 8620444 is about 205.0421804935.

The spelling of 8620444 in words is "eight million, six hundred twenty thousand, four hundred forty-four".