101065989 has 4 divisors (see below), whose sum is σ = 134754656. Its totient is φ = 67377324.

The previous prime is 101065973. The next prime is 101066033. The reversal of 101065989 is 989560101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 101065989 - 2⁴ = 101065973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101065919) 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, 16844329 + ... + 16844334.

It is an arithmetic number, because the mean of its divisors is an integer number (33688664).

Almost surely, 2^101065989 is an apocalyptic number.

It is an amenable number.

101065989 is a deficient number, since it is larger than the sum of its proper divisors (33688667).

101065989 is an equidigital number, since it uses as much as digits as its factorization.

101065989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33688666.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 101065989 is about 10053.1581604986. The cubic root of 101065989 is about 465.8023516044.

The spelling of 101065989 in words is "one hundred one million, sixty-five thousand, nine hundred eighty-nine".