9899634 has 16 divisors (see below), whose sum is σ = 19830240. Its totient is φ = 3294720.

The previous prime is 9899621. The next prime is 9899641. The reversal of 9899634 is 4369989.

It is a happy number.

9899634 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6322 + ... + 7730.

It is an arithmetic number, because the mean of its divisors is an integer number (1239390).

Almost surely, 2^9899634 is an apocalyptic number.

9899634 is an abundant number, since it is smaller than the sum of its proper divisors (9930606).

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

9899634 is a wasteful number, since it uses less digits than its factorization.

9899634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585.

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

The square root of 9899634 is about 3146.3683827550. The cubic root of 9899634 is about 214.7202707889.

The spelling of 9899634 in words is "nine million, eight hundred ninety-nine thousand, six hundred thirty-four".