43806881 has 4 divisors (see below), whose sum is σ = 45711552. Its totient is φ = 41902212.

The previous prime is 43806877. The next prime is 43806883. The reversal of 43806881 is 18860834.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43806881 - 2² = 43806877 is a prime.

It is a super-2 number, since 2×43806881² = 3838085645896322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43806883) 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 3 ways as a sum of consecutive naturals, for example, 952301 + ... + 952346.

It is an arithmetic number, because the mean of its divisors is an integer number (11427888).

Almost surely, 2^43806881 is an apocalyptic number.

It is an amenable number.

43806881 is a deficient number, since it is larger than the sum of its proper divisors (1904671).

43806881 is a wasteful number, since it uses less digits than its factorization.

43806881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904670.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 43806881 is about 6618.6766804249. The cubic root of 43806881 is about 352.5175780514.

The spelling of 43806881 in words is "forty-three million, eight hundred six thousand, eight hundred eighty-one".