9403998 has 8 divisors (see below), whose sum is σ = 18808008. Its totient is φ = 3134664.

The previous prime is 9403997. The next prime is 9404011. The reversal of 9403998 is 8993049.

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

9403998 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9403991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783661 + ... + 783672.

It is an arithmetic number, because the mean of its divisors is an integer number (2351001).

Almost surely, 2^9403998 is an apocalyptic number.

9403998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9403998 is a wasteful number, since it uses less digits than its factorization.

9403998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567338.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 9403998 is about 3066.5938759477. The cubic root of 9403998 is about 211.0753457622.

It can be divided in two parts, 9403 and 998, that added together give a palindrome (10401).

The spelling of 9403998 in words is "nine million, four hundred three thousand, nine hundred ninety-eight".