8619444 has 18 divisors (see below), whose sum is σ = 21788130. Its totient is φ = 2873136.

The previous prime is 8619439. The next prime is 8619461. The reversal of 8619444 is 4449168.

It is a happy number.

8619444 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5336100 + 3283344 = 2310^2 + 1812^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 239429 = 8619444 / (8 + 6 + 1 + 9 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 8619399 and 8619408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119679 + ... + 119750.

Almost surely, 2^8619444 is an apocalyptic number.

It is an amenable number.

8619444 is an abundant number, since it is smaller than the sum of its proper divisors (13168686).

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

8619444 is a wasteful number, since it uses less digits than its factorization.

8619444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239439 (or 239434 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 8619444 is about 2935.8889624780. Note that the first 3 decimals coincide. The cubic root of 8619444 is about 205.0342516633.

The spelling of 8619444 in words is "eight million, six hundred nineteen thousand, four hundred forty-four".