998916867 has 24 divisors (see below), whose sum is σ = 1611426544. Its totient is φ = 614716128.

The previous prime is 998916859. The next prime is 998916871. The reversal of 998916867 is 768619899.

It is not a de Polignac number, because 998916867 - 2³ = 998916859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998916817) 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 23 ways as a sum of consecutive naturals, for example, 154948 + ... + 161265.

Almost surely, 2^998916867 is an apocalyptic number.

998916867 is a deficient number, since it is larger than the sum of its proper divisors (612509677).

998916867 is a wasteful number, since it uses less digits than its factorization.

998916867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316241 (or 316229 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The square root of 998916867 is about 31605.6461253365. The cubic root of 998916867 is about 999.6388252352.

The spelling of 998916867 in words is "nine hundred ninety-eight million, nine hundred sixteen thousand, eight hundred sixty-seven".