8999634 has 32 divisors (see below), whose sum is σ = 20995200. Its totient is φ = 2570736.

The previous prime is 8999609. The next prime is 8999651. The reversal of 8999634 is 4369998.

It is a happy number.

It is an Ulam number.

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, 129 + ... + 4244.

It is an arithmetic number, because the mean of its divisors is an integer number (656100).

Almost surely, 2^8999634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8999634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10497600).

8999634 is an abundant number, since it is smaller than the sum of its proper divisors (11995566).

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

8999634 is a wasteful number, since it uses less digits than its factorization.

8999634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4399 (or 4385 counting only the distinct ones).

The product of its digits is 419904, while the sum is 48.

The square root of 8999634 is about 2999.9389993798. The cubic root of 8999634 is about 208.0055625978.

The spelling of 8999634 in words is "eight million, nine hundred ninety-nine thousand, six hundred thirty-four".