1076989 has 4 divisors (see below), whose sum is σ = 1089180. Its totient is φ = 1064800.

The previous prime is 1076981. The next prime is 1077017. The reversal of 1076989 is 9896701.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 765625 + 311364 = 875^2 + 558^2 .

It is a cyclic number.

It is not a de Polignac number, because 1076989 - 2³ = 1076981 is a prime.

It is a super-2 number, since 2×1076989² = 2319810612242, which contains 22 as substring.

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

It is a Duffinian number.

1076989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1076981) 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, 5962 + ... + 6139.

It is an arithmetic number, because the mean of its divisors is an integer number (272295).

2^1076989 is an apocalyptic number.

It is an amenable number.

1076989 is a deficient number, since it is larger than the sum of its proper divisors (12191).

1076989 is an equidigital number, since it uses as much as digits as its factorization.

1076989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12190.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 1076989 is about 1037.7808053727. The cubic root of 1076989 is about 102.5031210630.

It can be divided in two parts, 10769 and 89, that multiplied together give a square (958441 = 979²).

The spelling of 1076989 in words is "one million, seventy-six thousand, nine hundred eighty-nine".