11390585 has 4 divisors (see below), whose sum is σ = 13668708. Its totient is φ = 9112464.

The previous prime is 11390573. The next prime is 11390593. The reversal of 11390585 is 58509311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58509311 = 7 ⋅8358473.

It can be written as a sum of positive squares in 2 ways, for example, as 3728761 + 7661824 = 1931^2 + 2768^2 .

It is a cyclic number.

It is not a de Polignac number, because 11390585 - 2⁶ = 11390521 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1139054 + ... + 1139063.

It is an arithmetic number, because the mean of its divisors is an integer number (3417177).

Almost surely, 2^11390585 is an apocalyptic number.

It is an amenable number.

11390585 is a deficient number, since it is larger than the sum of its proper divisors (2278123).

11390585 is an equidigital number, since it uses as much as digits as its factorization.

11390585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278122.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 11390585 is about 3374.9940740689. The cubic root of 11390585 is about 224.9997366252. Note that the first 3 decimals are identical.

Adding to 11390585 its reverse (58509311), we get a palindrome (69899896).

The spelling of 11390585 in words is "eleven million, three hundred ninety thousand, five hundred eighty-five".