101010989 has 8 divisors (see below), whose sum is σ = 104815872. Its totient is φ = 97240320.

The previous prime is 101010979. The next prime is 101011013. The reversal of 101010989 is 989010101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101010989 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

101010989 is a modest number, since divided by 10989 gives 101 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101010929) 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, 2459 + ... + 14424.

It is an arithmetic number, because the mean of its divisors is an integer number (13101984).

Almost surely, 2^101010989 is an apocalyptic number.

It is an amenable number.

101010989 is a deficient number, since it is larger than the sum of its proper divisors (3804883).

101010989 is a wasteful number, since it uses less digits than its factorization.

101010989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17107.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 101010989 is about 10050.4223294347. The cubic root of 101010989 is about 465.7178398964.

The spelling of 101010989 in words is "one hundred one million, ten thousand, nine hundred eighty-nine".