101085989 has 8 divisors (see below), whose sum is σ = 105581760. Its totient is φ = 96598656.

The previous prime is 101085979. The next prime is 101086021. The reversal of 101085989 is 989580101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101085989 - 2²⁴ = 84308773 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 (101085979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45302 + ... + 47480.

It is an arithmetic number, because the mean of its divisors is an integer number (13197720).

Almost surely, 2^101085989 is an apocalyptic number.

It is an amenable number.

101085989 is a deficient number, since it is larger than the sum of its proper divisors (4495771).

101085989 is a wasteful number, since it uses less digits than its factorization.

101085989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219.

The product of its (nonzero) digits is 25920, while the sum is 41.

The square root of 101085989 is about 10054.1528235849. The cubic root of 101085989 is about 465.8330755326.

The spelling of 101085989 in words is "one hundred one million, eighty-five thousand, nine hundred eighty-nine".