8443404 has 18 divisors (see below), whose sum is σ = 21343140. Its totient is φ = 2814456.

The previous prime is 8443397. The next prime is 8443433. The reversal of 8443404 is 4043448.

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

It is a super-2 number, since 2×8443404² = 142582142214432, which contains 22 as substring.

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, 117234 + ... + 117305.

It is an arithmetic number, because the mean of its divisors is an integer number (1185730).

Almost surely, 2^8443404 is an apocalyptic number.

It is an amenable number.

8443404 is an abundant number, since it is smaller than the sum of its proper divisors (12899736).

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

8443404 is a wasteful number, since it uses less digits than its factorization.

8443404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234549 (or 234544 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 8443404 is about 2905.7536027681. The cubic root of 8443404 is about 203.6287943857.

The spelling of 8443404 in words is "eight million, four hundred forty-three thousand, four hundred four".