998892179 has 4 divisors (see below), whose sum is σ = 1002578400. Its totient is φ = 995205960.

The previous prime is 998892173. The next prime is 998892197. The reversal of 998892179 is 971298899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 971298899 = 727 ⋅1336037.

It is a cyclic number.

It is not a de Polignac number, because 998892179 - 2¹⁶ = 998826643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998892173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1842704 + ... + 1843245.

It is an arithmetic number, because the mean of its divisors is an integer number (250644600).

Almost surely, 2^998892179 is an apocalyptic number.

998892179 is a deficient number, since it is larger than the sum of its proper divisors (3686221).

998892179 is a wasteful number, since it uses less digits than its factorization.

998892179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686220.

The product of its digits is 5878656, while the sum is 62.

The square root of 998892179 is about 31605.2555597957. The cubic root of 998892179 is about 999.6305898863.

The spelling of 998892179 in words is "nine hundred ninety-eight million, eight hundred ninety-two thousand, one hundred seventy-nine".