11839945 has 16 divisors (see below), whose sum is σ = 16107840. Its totient is φ = 8282304.

The previous prime is 11839931. The next prime is 11839957. The reversal of 11839945 is 54993811.

11839945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11839945 - 2⁵ = 11839913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11839898 and 11839907.

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, 3559 + ... + 6028.

It is an arithmetic number, because the mean of its divisors is an integer number (1006740).

Almost surely, 2^11839945 is an apocalyptic number.

It is an amenable number.

11839945 is a deficient number, since it is larger than the sum of its proper divisors (4267895).

11839945 is a wasteful number, since it uses less digits than its factorization.

11839945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9624.

The product of its digits is 38880, while the sum is 40.

The square root of 11839945 is about 3440.9221147826. The cubic root of 11839945 is about 227.9204156938.

The spelling of 11839945 in words is "eleven million, eight hundred thirty-nine thousand, nine hundred forty-five".