43591941 has 12 divisors (see below), whose sum is σ = 63853920. Its totient is φ = 28651560.

The previous prime is 43591939. The next prime is 43591949. The reversal of 43591941 is 14919534.

It is a happy number.

It is not a de Polignac number, because 43591941 - 2¹ = 43591939 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43591896 and 43591905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43591949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33471 + ... + 34748.

It is an arithmetic number, because the mean of its divisors is an integer number (5321160).

Almost surely, 2^43591941 is an apocalyptic number.

It is an amenable number.

43591941 is a deficient number, since it is larger than the sum of its proper divisors (20261979).

43591941 is a wasteful number, since it uses less digits than its factorization.

43591941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68296 (or 68293 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 43591941 is about 6602.4193293065. The cubic root of 43591941 is about 351.9400858985.

The spelling of 43591941 in words is "forty-three million, five hundred ninety-one thousand, nine hundred forty-one".