11840387 has 4 divisors (see below), whose sum is σ = 12751200. Its totient is φ = 10929576.

The previous prime is 11840383. The next prime is 11840393. The reversal of 11840387 is 78304811.

11840387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11840387 - 2² = 11840383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11840383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455387 + ... + 455412.

It is an arithmetic number, because the mean of its divisors is an integer number (3187800).

Almost surely, 2^11840387 is an apocalyptic number.

11840387 is a deficient number, since it is larger than the sum of its proper divisors (910813).

11840387 is an equidigital number, since it uses as much as digits as its factorization.

11840387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910812.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 11840387 is about 3440.9863411528. The cubic root of 11840387 is about 227.9232518435.

The spelling of 11840387 in words is "eleven million, eight hundred forty thousand, three hundred eighty-seven".