43040169 has 6 divisors (see below), whose sum is σ = 62169146. Its totient is φ = 28693440.

The previous prime is 43040167. The next prime is 43040191. The reversal of 43040169 is 96104034.

43040169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 22924944 + 20115225 = 4788^2 + 4485^2 .

It is not a de Polignac number, because 43040169 - 2¹ = 43040167 is a prime.

It is a super-2 number, since 2×43040169² = 3704912295097122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43040167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2391112 + ... + 2391129.

Almost surely, 2^43040169 is an apocalyptic number.

It is an amenable number.

43040169 is a deficient number, since it is larger than the sum of its proper divisors (19128977).

43040169 is a wasteful number, since it uses less digits than its factorization.

43040169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782247 (or 4782244 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 43040169 is about 6560.5006668699. The cubic root of 43040169 is about 350.4488635569.

The spelling of 43040169 in words is "forty-three million, forty thousand, one hundred sixty-nine".