43908081 has 16 divisors (see below), whose sum is σ = 69817344. Its totient is φ = 23999184.

The previous prime is 43908077. The next prime is 43908083. The reversal of 43908081 is 18080934.

It is not a de Polignac number, because 43908081 - 2² = 43908077 is a prime.

It is a super-2 number, since 2×43908081² = 3855839154205122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43908083) 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, 44971 + ... + 45936.

It is an arithmetic number, because the mean of its divisors is an integer number (4363584).

Almost surely, 2^43908081 is an apocalyptic number.

It is an amenable number.

43908081 is a deficient number, since it is larger than the sum of its proper divisors (25909263).

43908081 is a wasteful number, since it uses less digits than its factorization.

43908081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90940.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 43908081 is about 6626.3173029972. The cubic root of 43908081 is about 352.7888241970.

The spelling of 43908081 in words is "forty-three million, nine hundred eight thousand, eighty-one".