1085729 has 8 divisors (see below), whose sum is σ = 1118880. Its totient is φ = 1053216.

The previous prime is 1085719. The next prime is 1085737. The reversal of 1085729 is 9275801.

1085729 is nontrivially palindromic in base 2.

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

It is a cyclic number.

It is not a de Polignac number, because 1085729 - 2⁸ = 1085473 is a prime.

It is a super-2 number, since 2×1085729² = 2357614922882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1085695 and 1085704.

It is not an unprimeable number, because it can be changed into a prime (1085719) 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, 7742 + ... + 7880.

It is an arithmetic number, because the mean of its divisors is an integer number (139860).

2^1085729 is an apocalyptic number.

It is an amenable number.

1085729 is a deficient number, since it is larger than the sum of its proper divisors (33151).

1085729 is a wasteful number, since it uses less digits than its factorization.

1085729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 1085729 is about 1041.9832052389. The cubic root of 1085729 is about 102.7796527429.

The spelling of 1085729 in words is "one million, eighty-five thousand, seven hundred twenty-nine".