43069905 has 12 divisors (see below), whose sum is σ = 74654580. Its totient is φ = 22970592.

The previous prime is 43069861. The next prime is 43069919. The reversal of 43069905 is 50996034.

It can be written as a sum of positive squares in 2 ways, for example, as 33558849 + 9511056 = 5793^2 + 3084^2 .

It is not a de Polignac number, because 43069905 - 2⁶ = 43069841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43069905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 478510 + ... + 478599.

It is an arithmetic number, because the mean of its divisors is an integer number (6221215).

Almost surely, 2^43069905 is an apocalyptic number.

43069905 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43069905 is a deficient number, since it is larger than the sum of its proper divisors (31584675).

43069905 is a wasteful number, since it uses less digits than its factorization.

43069905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957120 (or 957117 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 43069905 is about 6562.7665660147. The cubic root of 43069905 is about 350.5295521218.

The spelling of 43069905 in words is "forty-three million, sixty-nine thousand, nine hundred five".