989874563 has 2 divisors, whose sum is σ = 989874564. Its totient is φ = 989874562.

The previous prime is 989874467. The next prime is 989874581. The reversal of 989874563 is 365478989.

It is a strong prime.

It is an emirp because it is prime and its reverse (365478989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 989874563 - 2¹² = 989870467 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (989874763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494937281 + 494937282.

It is an arithmetic number, because the mean of its divisors is an integer number (494937282).

Almost surely, 2^989874563 is an apocalyptic number.

989874563 is a deficient number, since it is larger than the sum of its proper divisors (1).

989874563 is an equidigital number, since it uses as much as digits as its factorization.

989874563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 59.

The square root of 989874563 is about 31462.2720571799. The cubic root of 989874563 is about 996.6133982087.

The spelling of 989874563 in words is "nine hundred eighty-nine million, eight hundred seventy-four thousand, five hundred sixty-three".