1089967 has 2 divisors, whose sum is σ = 1089968. Its totient is φ = 1089966.

The previous prime is 1089961. The next prime is 1090003. The reversal of 1089967 is 7699801.

It is a weak prime.

It is an emirp because it is prime and its reverse (7699801) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1089967 is a prime.

It is a super-2 number, since 2×1089967² = 2376056122178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1089961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544983 + 544984.

It is an arithmetic number, because the mean of its divisors is an integer number (544984).

2^1089967 is an apocalyptic number.

1089967 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089967 is an equidigital number, since it uses as much as digits as its factorization.

1089967 is an evil number, because the sum of its binary digits is even.

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

The square root of 1089967 is about 1044.0148466377. The cubic root of 1089967 is about 102.9132080625.

The spelling of 1089967 in words is "one million, eighty-nine thousand, nine hundred sixty-seven".