998437 has 8 divisors (see below), whose sum is σ = 1098720. Its totient is φ = 899760.

The previous prime is 998429. The next prime is 998443. The reversal of 998437 is 734899.

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

It is a cyclic number.

It is not a de Polignac number, because 998437 - 2³ = 998429 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 998437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998497) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1203 + ... + 1855.

It is an arithmetic number, because the mean of its divisors is an integer number (137340).

2⁹⁹⁸⁴³⁷ is an apocalyptic number.

It is an amenable number.

998437 is a deficient number, since it is larger than the sum of its proper divisors (100283).

998437 is a wasteful number, since it uses less digits than its factorization.

998437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803.

The product of its digits is 54432, while the sum is 40.

The square root of 998437 is about 999.2181943900. The cubic root of 998437 is about 99.9478728323.

The spelling of 998437 in words is "nine hundred ninety-eight thousand, four hundred thirty-seven".