11839645 has 4 divisors (see below), whose sum is σ = 14207580. Its totient is φ = 9471712.

The previous prime is 11839643. The next prime is 11839661. The reversal of 11839645 is 54693811.

11839645 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 can be written as a sum of positive squares in 2 ways, for example, as 7986276 + 3853369 = 2826^2 + 1963^2 .

It is a cyclic number.

It is not a de Polignac number, because 11839645 - 2¹ = 11839643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11839643) 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, 1183960 + ... + 1183969.

It is an arithmetic number, because the mean of its divisors is an integer number (3551895).

Almost surely, 2^11839645 is an apocalyptic number.

It is an amenable number.

11839645 is a deficient number, since it is larger than the sum of its proper divisors (2367935).

11839645 is an equidigital number, since it uses as much as digits as its factorization.

11839645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367934.

The product of its digits is 25920, while the sum is 37.

The square root of 11839645 is about 3440.8785215407. The cubic root of 11839645 is about 227.9184906651.

The spelling of 11839645 in words is "eleven million, eight hundred thirty-nine thousand, six hundred forty-five".