9439998 has 32 divisors (see below), whose sum is σ = 21047040. Its totient is φ = 2805120.

The previous prime is 9439987. The next prime is 9440021. The reversal of 9439998 is 8999349.

It is a super-2 number, since 2×9439998² = 178227124480008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 9439998.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498 + ... + 4373.

It is an arithmetic number, because the mean of its divisors is an integer number (657720).

Almost surely, 2^9439998 is an apocalyptic number.

9439998 is an abundant number, since it is smaller than the sum of its proper divisors (11607042).

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

9439998 is a wasteful number, since it uses less digits than its factorization.

9439998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4912.

The product of its digits is 629856, while the sum is 51.

The square root of 9439998 is about 3072.4579736751. The cubic root of 9439998 is about 211.3443461263.

The spelling of 9439998 in words is "nine million, four hundred thirty-nine thousand, nine hundred ninety-eight".