998910017 has 16 divisors (see below), whose sum is σ = 1189507200. Its totient is φ = 820713600.

The previous prime is 998909969. The next prime is 998910041. The reversal of 998910017 is 710019899.

It is not a de Polignac number, because 998910017 - 2⁸ = 998909761 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 998910017.

It is not an unprimeable number, because it can be changed into a prime (998910097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10517 + ... + 45917.

It is an arithmetic number, because the mean of its divisors is an integer number (74344200).

Almost surely, 2^998910017 is an apocalyptic number.

It is an amenable number.

998910017 is a deficient number, since it is larger than the sum of its proper divisors (190597183).

998910017 is a wasteful number, since it uses less digits than its factorization.

998910017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35576.

The product of its (nonzero) digits is 40824, while the sum is 44.

The square root of 998910017 is about 31605.5377584372. The cubic root of 998910017 is about 999.6365402463.

The spelling of 998910017 in words is "nine hundred ninety-eight million, nine hundred ten thousand, seventeen".