43678881 has 9 divisors (see below), whose sum is σ = 63120369. Its totient is φ = 29106036.

The previous prime is 43678871. The next prime is 43678883. The reversal of 43678881 is 18887634.

The square root of 43678881 is 6609.

It is a perfect power (a square), and thus also a powerful number.

43678881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 43678881 - 2⁷ = 43678753 is a prime.

It is a super-2 number, since 2×43678881² = 3815689290824322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43678883) 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 8 ways as a sum of consecutive naturals, for example, 18726 + ... + 20928.

Almost surely, 2^43678881 is an apocalyptic number.

43678881 is the 6609-th square number.

43678881 is the 3305-th centered octagonal number.

It is an amenable number.

43678881 is a deficient number, since it is larger than the sum of its proper divisors (19441488).

43678881 is an frugal number, since it uses more digits than its factorization.

43678881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4412 (or 2206 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The cubic root of 43678881 is about 352.1739009224.

The spelling of 43678881 in words is "forty-three million, six hundred seventy-eight thousand, eight hundred eighty-one".