1088789 has 8 divisors (see below), whose sum is σ = 1192632. Its totient is φ = 987840.

The previous prime is 1088783. The next prime is 1088807. The reversal of 1088789 is 9878801.

1088789 = 192² + 193² + ... + 217².

It can be written as a sum of positive squares in 4 ways, for example, as 58564 + 1030225 = 242^2 + 1015^2 .

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 1088789 - 2⁸ = 1088533 is a prime.

It is a super-2 number, since 2×1088789² = 2370922973042, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1088783) 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, 107 + ... + 1479.

It is an arithmetic number, because the mean of its divisors is an integer number (149079).

2^1088789 is an apocalyptic number.

It is an amenable number.

1088789 is a deficient number, since it is larger than the sum of its proper divisors (103843).

1088789 is a wasteful number, since it uses less digits than its factorization.

1088789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447.

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 1088789 is about 1043.4505258995. The cubic root of 1088789 is about 102.8761196431.

The spelling of 1088789 in words is "one million, eighty-eight thousand, seven hundred eighty-nine".