998424969 has 4 divisors (see below), whose sum is σ = 1331233296. Its totient is φ = 665616644.

The previous prime is 998424953. The next prime is 998424979. The reversal of 998424969 is 969424899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 969424899 = 3 ⋅323141633.

It is a cyclic number.

It is not a de Polignac number, because 998424969 - 2⁴ = 998424953 is a prime.

It is a super-2 number, since 2×998424969² = 1993704837445301922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (998424949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166404159 + ... + 166404164.

It is an arithmetic number, because the mean of its divisors is an integer number (332808324).

Almost surely, 2^998424969 is an apocalyptic number.

It is an amenable number.

998424969 is a deficient number, since it is larger than the sum of its proper divisors (332808327).

998424969 is a wasteful number, since it uses less digits than its factorization.

998424969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332808326.

The product of its digits is 10077696, while the sum is 60.

The square root of 998424969 is about 31597.8633613097. The cubic root of 998424969 is about 999.4747137894.

The spelling of 998424969 in words is "nine hundred ninety-eight million, four hundred twenty-four thousand, nine hundred sixty-nine".