43873869 has 16 divisors (see below), whose sum is σ = 66315200. Its totient is φ = 25577856.

The previous prime is 43873859. The next prime is 43873873. The reversal of 43873869 is 96837834.

It is not a de Polignac number, because 43873869 - 2⁷ = 43873741 is a prime.

It is a super-2 number, since 2×43873869² = 3849832762058322, 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 (43873829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28864 + ... + 30345.

It is an arithmetic number, because the mean of its divisors is an integer number (4144700).

Almost surely, 2^43873869 is an apocalyptic number.

It is an amenable number.

43873869 is a deficient number, since it is larger than the sum of its proper divisors (22441331).

43873869 is a wasteful number, since it uses less digits than its factorization.

43873869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59244.

The product of its digits is 870912, while the sum is 48.

The square root of 43873869 is about 6623.7352755073. The cubic root of 43873869 is about 352.6971725229.

It can be divided in two parts, 4387 and 3869, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 43873869 in words is "forty-three million, eight hundred seventy-three thousand, eight hundred sixty-nine".