8406813 has 8 divisors (see below), whose sum is σ = 11229376. Its totient is φ = 5594400.

The previous prime is 8406809. The next prime is 8406817. The reversal of 8406813 is 3186048.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8406809) and next prime (8406817).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8406813 - 2² = 8406809 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8406817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328 + ... + 4113.

It is an arithmetic number, because the mean of its divisors is an integer number (1403672).

Almost surely, 2^8406813 is an apocalyptic number.

It is an amenable number.

8406813 is a deficient number, since it is larger than the sum of its proper divisors (2822563).

8406813 is a wasteful number, since it uses less digits than its factorization.

8406813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5075.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 8406813 is about 2899.4504651744. The cubic root of 8406813 is about 203.3342145144.

The spelling of 8406813 in words is "eight million, four hundred six thousand, eight hundred thirteen".