40889081 has 4 divisors (see below), whose sum is σ = 40936272. Its totient is φ = 40841892.

The previous prime is 40889077. The next prime is 40889099. The reversal of 40889081 is 18098804.

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 40889081 - 2² = 40889077 is a prime.

It is a super-2 number, since 2×40889081² = 3343833890049122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40889011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22271 + ... + 24036.

It is an arithmetic number, because the mean of its divisors is an integer number (10234068).

Almost surely, 2^40889081 is an apocalyptic number.

It is an amenable number.

40889081 is a deficient number, since it is larger than the sum of its proper divisors (47191).

40889081 is an equidigital number, since it uses as much as digits as its factorization.

40889081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47190.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 40889081 is about 6394.4570527919. The cubic root of 40889081 is about 344.5104897018.

The spelling of 40889081 in words is "forty million, eight hundred eighty-nine thousand, eighty-one".