8404513 has 16 divisors (see below), whose sum is σ = 9441936. Its totient is φ = 7430400.

The previous prime is 8404489. The next prime is 8404531. The reversal of 8404513 is 3154048.

It can be written as a sum of positive squares in 8 ways, for example, as 2411809 + 5992704 = 1553^2 + 2448^2 .

It is a cyclic number.

It is not a de Polignac number, because 8404513 - 2¹³ = 8396321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8404553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48495 + ... + 48667.

It is an arithmetic number, because the mean of its divisors is an integer number (590121).

Almost surely, 2^8404513 is an apocalyptic number.

It is an amenable number.

8404513 is a deficient number, since it is larger than the sum of its proper divisors (1037423).

8404513 is a wasteful number, since it uses less digits than its factorization.

8404513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 8404513 is about 2899.0538111598. The cubic root of 8404513 is about 203.3156695815.

The spelling of 8404513 in words is "eight million, four hundred four thousand, five hundred thirteen".