8623444 has 6 divisors (see below), whose sum is σ = 15091034. Its totient is φ = 4311720.

The previous prime is 8623429. The next prime is 8623519. The reversal of 8623444 is 4443268.

It can be written as a sum of positive squares in only one way, i.e., 8410000 + 213444 = 2900^2 + 462^2 .

It is a super-2 number, since 2×8623444² = 148727572842272, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077927 + ... + 1077934.

Almost surely, 2^8623444 is an apocalyptic number.

It is an amenable number.

8623444 is a deficient number, since it is larger than the sum of its proper divisors (6467590).

8623444 is a wasteful number, since it uses less digits than its factorization.

8623444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155865 (or 2155863 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The square root of 8623444 is about 2936.5701081364. The cubic root of 8623444 is about 205.0659633056.

The spelling of 8623444 in words is "eight million, six hundred twenty-three thousand, four hundred forty-four".