101989963 has 2 divisors, whose sum is σ = 101989964. Its totient is φ = 101989962.

The previous prime is 101989931. The next prime is 101989973. The reversal of 101989963 is 369989101.

It is a strong prime.

It is an emirp because it is prime and its reverse (369989101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101989963 - 2⁵ = 101989931 is a prime.

It is not a weakly prime, because it can be changed into another prime (101989903) 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 as a sum of consecutive naturals, namely, 50994981 + 50994982.

It is an arithmetic number, because the mean of its divisors is an integer number (50994982).

Almost surely, 2^101989963 is an apocalyptic number.

101989963 is a deficient number, since it is larger than the sum of its proper divisors (1).

101989963 is an equidigital number, since it uses as much as digits as its factorization.

101989963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 101989963 is about 10099.0080205929. The cubic root of 101989963 is about 467.2175467892.

The spelling of 101989963 in words is "one hundred one million, nine hundred eighty-nine thousand, nine hundred sixty-three".