40844891 has 2 divisors, whose sum is σ = 40844892. Its totient is φ = 40844890.

The previous prime is 40844873. The next prime is 40844911. The reversal of 40844891 is 19844804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40844891 - 2⁶ = 40844827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40844831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20422445 + 20422446.

It is an arithmetic number, because the mean of its divisors is an integer number (20422446).

Almost surely, 2^40844891 is an apocalyptic number.

40844891 is a deficient number, since it is larger than the sum of its proper divisors (1).

40844891 is an equidigital number, since it uses as much as digits as its factorization.

40844891 is an odious number, because the sum of its binary digits is odd.

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

The square root of 40844891 is about 6391.0007823501. Note that the first 3 decimals coincide. The cubic root of 40844891 is about 344.3863375176.

The spelling of 40844891 in words is "forty million, eight hundred forty-four thousand, eight hundred ninety-one".