8408634 has 32 divisors (see below), whose sum is σ = 18392640. Its totient is φ = 2547072.

The previous prime is 8408623. The next prime is 8408641. The reversal of 8408634 is 4368048.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8408595 and 8408604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4422 + ... + 6030.

It is an arithmetic number, because the mean of its divisors is an integer number (574770).

Almost surely, 2^8408634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8408634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9196320).

8408634 is an abundant number, since it is smaller than the sum of its proper divisors (9984006).

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

8408634 is a wasteful number, since it uses less digits than its factorization.

8408634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 8408634 is about 2899.7644731943. The cubic root of 8408634 is about 203.3488948644.

The spelling of 8408634 in words is "eight million, four hundred eight thousand, six hundred thirty-four".