11390505 has 32 divisors (see below), whose sum is σ = 21095424. Its totient is φ = 5140416.

The previous prime is 11390479. The next prime is 11390521. The reversal of 11390505 is 50509311.

11390505 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11390505 - 2⁵ = 11390473 is a prime.

It is a nialpdrome in base 15.

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 31 ways as a sum of consecutive naturals, for example, 8062 + ... + 9368.

It is an arithmetic number, because the mean of its divisors is an integer number (659232).

Almost surely, 2^11390505 is an apocalyptic number.

11390505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11390505 is a deficient number, since it is larger than the sum of its proper divisors (9704919).

11390505 is a wasteful number, since it uses less digits than its factorization.

11390505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405.

The product of its (nonzero) digits is 675, while the sum is 24.

The square root of 11390505 is about 3374.9822221754. The cubic root of 11390505 is about 224.9992098738. Note that the first 3 decimals are identical.

Adding to 11390505 its reverse (50509311), we get a palindrome (61899816).

The spelling of 11390505 in words is "eleven million, three hundred ninety thousand, five hundred five".