998470 has 32 divisors (see below), whose sum is σ = 2034720. Its totient is φ = 349440.

The previous prime is 998443. The next prime is 998471. The reversal of 998470 is 74899.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998471) by changing a digit.

998470 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 3034 + ... + 3346.

It is an arithmetic number, because the mean of its divisors is an integer number (63585).

2⁹⁹⁸⁴⁷⁰ is an apocalyptic number.

998470 is an abundant number, since it is smaller than the sum of its proper divisors (1036250).

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

998470 is a wasteful number, since it uses less digits than its factorization.

998470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 998470 is about 999.2347071634. The cubic root of 998470 is about 99.9489739679.

The spelling of 998470 in words is "nine hundred ninety-eight thousand, four hundred seventy".