998368887 has 4 divisors (see below), whose sum is σ = 1331158520. Its totient is φ = 665579256.

The previous prime is 998368879. The next prime is 998368909. The reversal of 998368887 is 788863899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 788863899 = 3 ⋅262954633.

It is not a de Polignac number, because 998368887 - 2³ = 998368879 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 (998368807) 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, 166394812 + ... + 166394817.

It is an arithmetic number, because the mean of its divisors is an integer number (332789630).

Almost surely, 2^998368887 is an apocalyptic number.

998368887 is a deficient number, since it is larger than the sum of its proper divisors (332789633).

998368887 is a wasteful number, since it uses less digits than its factorization.

998368887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332789632.

The product of its digits is 41803776, while the sum is 66.

The square root of 998368887 is about 31596.9759154258. The cubic root of 998368887 is about 999.4559997841.

The spelling of 998368887 in words is "nine hundred ninety-eight million, three hundred sixty-eight thousand, eight hundred eighty-seven".