1097889 has 8 divisors (see below), whose sum is σ = 1576512. Its totient is φ = 675600.

The previous prime is 1097879. The next prime is 1097891. The reversal of 1097889 is 9887901.

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

It is not a de Polignac number, because 1097889 - 2⁸ = 1097633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1097889.

It is not an unprimeable number, because it can be changed into a prime (1097819) 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, 14037 + ... + 14114.

It is an arithmetic number, because the mean of its divisors is an integer number (197064).

2^1097889 is an apocalyptic number.

It is an amenable number.

1097889 is a deficient number, since it is larger than the sum of its proper divisors (478623).

1097889 is a wasteful number, since it uses less digits than its factorization.

1097889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28167.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 1097889 is about 1047.8019851098. The cubic root of 1097889 is about 103.1619346122.

Subtracting from 1097889 its product of nonzero digits (36288), we obtain a palindrome (1061601).

The spelling of 1097889 in words is "one million, ninety-seven thousand, eight hundred eighty-nine".