9998406 has 24 divisors (see below), whose sum is σ = 23633064. Its totient is φ = 3029760.

The previous prime is 9998393. The next prime is 9998413. The reversal of 9998406 is 6048999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25051 + ... + 25446.

It is an arithmetic number, because the mean of its divisors is an integer number (984711).

Almost surely, 2^9998406 is an apocalyptic number.

9998406 is an abundant number, since it is smaller than the sum of its proper divisors (13634658).

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

9998406 is a wasteful number, since it uses less digits than its factorization.

9998406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50516 (or 50513 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 9998406 is about 3162.0256165945. The cubic root of 9998406 is about 215.4320211653.

It can be divided in two parts, 9998 and 406, that added together give a square (10404 = 102²).

The spelling of 9998406 in words is "nine million, nine hundred ninety-eight thousand, four hundred six".