8213404 has 12 divisors (see below), whose sum is σ = 14394744. Its totient is φ = 4100624.

The previous prime is 8213399. The next prime is 8213411. The reversal of 8213404 is 4043128.

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, 3039 + ... + 5065.

It is an arithmetic number, because the mean of its divisors is an integer number (1199562).

Almost surely, 2^8213404 is an apocalyptic number.

It is an amenable number.

8213404 is a deficient number, since it is larger than the sum of its proper divisors (6181340).

8213404 is a wasteful number, since it uses less digits than its factorization.

8213404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044 (or 3042 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 8213404 is about 2865.9036969166. The cubic root of 8213404 is about 201.7627839824.

It can be divided in two parts, 821 and 3404, that added together give a square (4225 = 65²).

The spelling of 8213404 in words is "eight million, two hundred thirteen thousand, four hundred four".