100889563 has 4 divisors (see below), whose sum is σ = 106199560. Its totient is φ = 95579568.

The previous prime is 100889549. The next prime is 100889573. The reversal of 100889563 is 365988001.

It is a happy number.

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 100889563 - 2¹³ = 100881371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100889513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2654970 + ... + 2655007.

It is an arithmetic number, because the mean of its divisors is an integer number (26549890).

Almost surely, 2^100889563 is an apocalyptic number.

100889563 is a deficient number, since it is larger than the sum of its proper divisors (5309997).

100889563 is an equidigital number, since it uses as much as digits as its factorization.

100889563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5309996.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 100889563 is about 10044.3796722346. The cubic root of 100889563 is about 465.5311508706.

The spelling of 100889563 in words is "one hundred million, eight hundred eighty-nine thousand, five hundred sixty-three".