1010989 has 4 divisors (see below), whose sum is σ = 1155424. Its totient is φ = 866556.

The previous prime is 1010983. The next prime is 1010993. The reversal of 1010989 is 9890101.

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 a cyclic number.

It is not a de Polignac number, because 1010989 - 2³ = 1010981 is a prime.

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

It is a Duffinian number.

1010989 is a modest number, since divided by 10989 gives 1 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010981) 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 in 3 ways as a sum of consecutive naturals, for example, 72207 + ... + 72220.

It is an arithmetic number, because the mean of its divisors is an integer number (288856).

2^1010989 is an apocalyptic number.

It is an amenable number.

1010989 is a deficient number, since it is larger than the sum of its proper divisors (144435).

1010989 is an equidigital number, since it uses as much as digits as its factorization.

1010989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144434.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1010989 is about 1005.4794876078. The cubic root of 1010989 is about 100.3649663750.

The spelling of 1010989 in words is "one million, ten thousand, nine hundred eighty-nine".