43808481 has 24 divisors (see below), whose sum is σ = 65356200. Its totient is φ = 28256256.

The previous prime is 43808467. The next prime is 43808483. The reversal of 43808481 is 18480834.

It can be written as a sum of positive squares in 4 ways, for example, as 29062881 + 14745600 = 5391^2 + 3840^2 .

It is not a de Polignac number, because 43808481 - 2⁶ = 43808417 is a prime.

It is a super-2 number, since 2×43808481² = 3838366015054722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43808483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97345 + ... + 97793.

It is an arithmetic number, because the mean of its divisors is an integer number (2723175).

Almost surely, 2^43808481 is an apocalyptic number.

It is an amenable number.

43808481 is a deficient number, since it is larger than the sum of its proper divisors (21547719).

43808481 is a wasteful number, since it uses less digits than its factorization.

43808481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 43808481 is about 6618.7975494043. The cubic root of 43808481 is about 352.5218697764.

The spelling of 43808481 in words is "forty-three million, eight hundred eight thousand, four hundred eighty-one".