11389785 has 16 divisors (see below), whose sum is σ = 19880640. Its totient is φ = 5522240.

The previous prime is 11389771. The next prime is 11389831. The reversal of 11389785 is 58798311.

It is not a de Polignac number, because 11389785 - 2⁷ = 11389657 is a prime.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34350 + ... + 34679.

It is an arithmetic number, because the mean of its divisors is an integer number (1242540).

Almost surely, 2^11389785 is an apocalyptic number.

11389785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11389785 is a deficient number, since it is larger than the sum of its proper divisors (8490855).

11389785 is a wasteful number, since it uses less digits than its factorization.

11389785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69048.

The product of its digits is 60480, while the sum is 42.

The square root of 11389785 is about 3374.8755532612. The cubic root of 11389785 is about 224.9944689998.

It can be divided in two parts, 113 and 89785, that added together give a palindrome (89898).

The spelling of 11389785 in words is "eleven million, three hundred eighty-nine thousand, seven hundred eighty-five".