998963 has 24 divisors (see below), whose sum is σ = 1299600. Its totient is φ = 762048.

The previous prime is 998957. The next prime is 998969. The reversal of 998963 is 369899.

It is an interprime number because it is at equal distance from previous prime (998957) and next prime (998969).

It is not a de Polignac number, because 998963 - 2⁴ = 998947 is a prime.

It is a zygodrome in base 2 and base 6.

It is not an unprimeable number, because it can be changed into a prime (998969) 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, 26981 + ... + 27017.

It is an arithmetic number, because the mean of its divisors is an integer number (54150).

2⁹⁹⁸⁹⁶³ is an apocalyptic number.

998963 is a deficient number, since it is larger than the sum of its proper divisors (300637).

998963 is a wasteful number, since it uses less digits than its factorization.

998963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 92 counting only the distinct ones).

The product of its digits is 104976, while the sum is 44.

The square root of 998963 is about 999.4813655091. The cubic root of 998963 is about 99.9654213779.

It can be divided in two parts, 99896 and 3, that added together give a palindrome (99899).

The spelling of 998963 in words is "nine hundred ninety-eight thousand, nine hundred sixty-three".