99941563 has 4 divisors (see below), whose sum is σ = 100164600. Its totient is φ = 99718528.

The previous prime is 99941561. The next prime is 99941579. The reversal of 99941563 is 36514999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99941563 - 2¹ = 99941561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99941561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110845 + ... + 111742.

It is an arithmetic number, because the mean of its divisors is an integer number (25041150).

Almost surely, 2^99941563 is an apocalyptic number.

99941563 is a deficient number, since it is larger than the sum of its proper divisors (223037).

99941563 is a wasteful number, since it uses less digits than its factorization.

99941563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223036.

The product of its digits is 262440, while the sum is 46.

The square root of 99941563 is about 9997.0777230149. The cubic root of 99941563 is about 464.0684522350.

The spelling of 99941563 in words is "ninety-nine million, nine hundred forty-one thousand, five hundred sixty-three".