40928881 has 4 divisors (see below), whose sum is σ = 46775872. Its totient is φ = 35081892.

The previous prime is 40928857. The next prime is 40928903. The reversal of 40928881 is 18882904.

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 40928881 - 2⁹ = 40928369 is a prime.

It is a super-2 number, since 2×40928881² = 3350346599824322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40928281) 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, 2923485 + ... + 2923498.

It is an arithmetic number, because the mean of its divisors is an integer number (11693968).

Almost surely, 2^40928881 is an apocalyptic number.

It is an amenable number.

40928881 is a deficient number, since it is larger than the sum of its proper divisors (5846991).

40928881 is an equidigital number, since it uses as much as digits as its factorization.

40928881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5846990.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 40928881 is about 6397.5683661841. The cubic root of 40928881 is about 344.6222316044.

The spelling of 40928881 in words is "forty million, nine hundred twenty-eight thousand, eight hundred eighty-one".