10391085 has 20 divisors (see below), whose sum is σ = 18627708. Its totient is φ = 5541696.

The previous prime is 10391071. The next prime is 10391093. The reversal of 10391085 is 58019301.

It can be written as a sum of positive squares in 2 ways, for example, as 3437316 + 6953769 = 1854^2 + 2637^2 .

It is not a de Polignac number, because 10391085 - 2⁵ = 10391053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12424 + ... + 13233.

Almost surely, 2^10391085 is an apocalyptic number.

10391085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10391085 is a deficient number, since it is larger than the sum of its proper divisors (8236623).

10391085 is an equidigital number, since it uses as much as digits as its factorization.

10391085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25674 (or 25665 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 10391085 is about 3223.5205909068. The cubic root of 10391085 is about 218.2161884774.

The spelling of 10391085 in words is "ten million, three hundred ninety-one thousand, eighty-five".