1089919 has 2 divisors, whose sum is σ = 1089920. Its totient is φ = 1089918.

The previous prime is 1089917. The next prime is 1089941. The reversal of 1089919 is 9199801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1089919 - 2¹ = 1089917 is a prime.

It is a super-2 number, since 2×1089919² = 2375846853122, which contains 22 as substring.

Together with 1089917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1089917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544959 + 544960.

It is an arithmetic number, because the mean of its divisors is an integer number (544960).

2^1089919 is an apocalyptic number.

1089919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089919 is an equidigital number, since it uses as much as digits as its factorization.

1089919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 1089919 is about 1043.9918582058. The cubic root of 1089919 is about 102.9116973420.

The spelling of 1089919 in words is "one million, eighty-nine thousand, nine hundred nineteen".