1089929 has 4 divisors (see below), whose sum is σ = 1125120. Its totient is φ = 1054740.

The previous prime is 1089919. The next prime is 1089941. The reversal of 1089929 is 9299801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1089929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1089892 and 1089901.

It is not an unprimeable number, because it can be changed into a prime (1089919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17549 + ... + 17610.

It is an arithmetic number, because the mean of its divisors is an integer number (281280).

2^1089929 is an apocalyptic number.

It is an amenable number.

1089929 is a deficient number, since it is larger than the sum of its proper divisors (35191).

1089929 is an equidigital number, since it uses as much as digits as its factorization.

1089929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35190.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 1089929 is about 1043.9966475042. The cubic root of 1089929 is about 102.9120120791.

The spelling of 1089929 in words is "one million, eighty-nine thousand, nine hundred twenty-nine".