1089897 has 8 divisors (see below), whose sum is σ = 1529760. Its totient is φ = 688320.

The previous prime is 1089877. The next prime is 1089917. The reversal of 1089897 is 7989801.

It is an interprime number because it is at equal distance from previous prime (1089877) and next prime (1089917).

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

It is not a de Polignac number, because 1089897 - 2¹² = 1085801 is a prime.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1089877) 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, 9504 + ... + 9617.

It is an arithmetic number, because the mean of its divisors is an integer number (191220).

2^1089897 is an apocalyptic number.

It is an amenable number.

1089897 is a deficient number, since it is larger than the sum of its proper divisors (439863).

1089897 is a wasteful number, since it uses less digits than its factorization.

1089897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19143.

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

The square root of 1089897 is about 1043.9813216720. The cubic root of 1089897 is about 102.9110049136.

The spelling of 1089897 in words is "one million, eighty-nine thousand, eight hundred ninety-seven".