11389865 has 8 divisors (see below), whose sum is σ = 14108928. Its totient is φ = 8817840.

The previous prime is 11389849. The next prime is 11389867. The reversal of 11389865 is 56898311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11389865 - 2⁴ = 11389849 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11389867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36587 + ... + 36896.

It is an arithmetic number, because the mean of its divisors is an integer number (1763616).

Almost surely, 2^11389865 is an apocalyptic number.

It is an amenable number.

11389865 is a deficient number, since it is larger than the sum of its proper divisors (2719063).

11389865 is an equidigital number, since it uses as much as digits as its factorization.

11389865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73519.

The product of its digits is 51840, while the sum is 41.

The square root of 11389865 is about 3374.8874055293. The cubic root of 11389865 is about 224.9949957735.

The spelling of 11389865 in words is "eleven million, three hundred eighty-nine thousand, eight hundred sixty-five".