43161869 has 16 divisors (see below), whose sum is σ = 47008128. Its totient is φ = 39517632.

The previous prime is 43161851. The next prime is 43161871. The reversal of 43161869 is 96816134.

It is a cyclic number.

It is not a de Polignac number, because 43161869 - 2¹² = 43157773 is a prime.

It is a super-2 number, since 2×43161869² = 3725893871146322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43161829) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 56639 + ... + 57395.

It is an arithmetic number, because the mean of its divisors is an integer number (2938008).

Almost surely, 2^43161869 is an apocalyptic number.

It is an amenable number.

43161869 is a deficient number, since it is larger than the sum of its proper divisors (3846259).

43161869 is a wasteful number, since it uses less digits than its factorization.

43161869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884.

The product of its digits is 31104, while the sum is 38.

The square root of 43161869 is about 6569.7693262397. The cubic root of 43161869 is about 350.7788614181.

The spelling of 43161869 in words is "forty-three million, one hundred sixty-one thousand, eight hundred sixty-nine".