998460823 has 4 divisors (see below), whose sum is σ = 1022813568. Its totient is φ = 974108080.

The previous prime is 998460787. The next prime is 998460857. The reversal of 998460823 is 328064899.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 998460823 - 2¹⁷ = 998329751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998460863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12176311 + ... + 12176392.

It is an arithmetic number, because the mean of its divisors is an integer number (255703392).

Almost surely, 2^998460823 is an apocalyptic number.

998460823 is a deficient number, since it is larger than the sum of its proper divisors (24352745).

998460823 is a wasteful number, since it uses less digits than its factorization.

998460823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24352744.

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 998460823 is about 31598.4307047043. The cubic root of 998460823 is about 999.4866775451.

It can be divided in two parts, 9984 and 60823, that added together give a palindrome (70807).

The spelling of 998460823 in words is "nine hundred ninety-eight million, four hundred sixty thousand, eight hundred twenty-three".