8404136 has 16 divisors (see below), whose sum is σ = 16970100. Its totient is φ = 3878784.

The previous prime is 8404127. The next prime is 8404141. The reversal of 8404136 is 6314048.

It can be written as a sum of positive squares in 2 ways, for example, as 8375236 + 28900 = 2894^2 + 170^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 40301 + ... + 40508.

Almost surely, 2^8404136 is an apocalyptic number.

It is an amenable number.

8404136 is an abundant number, since it is smaller than the sum of its proper divisors (8565964).

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

8404136 is a wasteful number, since it uses less digits than its factorization.

8404136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80828 (or 80824 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 8404136 is about 2898.9887892160. The cubic root of 8404136 is about 203.3126295023.

The spelling of 8404136 in words is "eight million, four hundred four thousand, one hundred thirty-six".