1085491 has 6 divisors (see below), whose sum is σ = 1193276. Its totient is φ = 986700.

The previous prime is 1085473. The next prime is 1085509. The reversal of 1085491 is 1945801.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1085473) and next prime (1085509).

It is not a de Polignac number, because 1085491 - 2⁵ = 1085459 is a prime.

It is a super-2 number, since 2×1085491² = 2356581422162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1085431) 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 5 ways as a sum of consecutive naturals, for example, 4365 + ... + 4606.

2^1085491 is an apocalyptic number.

1085491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1085491 is a deficient number, since it is larger than the sum of its proper divisors (107785).

1085491 is an equidigital number, since it uses as much as digits as its factorization.

1085491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8993 (or 8982 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1085491 is about 1041.8689936839. The cubic root of 1085491 is about 102.7721421686.

The spelling of 1085491 in words is "one million, eighty-five thousand, four hundred ninety-one".