8641404 has 60 divisors (see below), whose sum is σ = 22869000. Its totient is φ = 2845152.

The previous prime is 8641361. The next prime is 8641421. The reversal of 8641404 is 4041468.

8641404 = 84³ + 85³ + ... + 95³.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 48187 + ... + 48365.

It is an arithmetic number, because the mean of its divisors is an integer number (381150).

Almost surely, 2^8641404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8641404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11434500).

8641404 is an abundant number, since it is smaller than the sum of its proper divisors (14227596).

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

8641404 is a wasteful number, since it uses less digits than its factorization.

8641404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 8641404 is about 2939.6265068882. The cubic root of 8641404 is about 205.2082278429.

It can be divided in two parts, 8641 and 404, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 8641404 in words is "eight million, six hundred forty-one thousand, four hundred four".