44445091 has 2 divisors, whose sum is σ = 44445092. Its totient is φ = 44445090.

The previous prime is 44445073. The next prime is 44445097. The reversal of 44445091 is 19054444.

44445091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 44445091 - 2⁵ = 44445059 is a prime.

It is a super-2 number, since 2×44445091² = 3950732227996562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44445097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22222545 + 22222546.

It is an arithmetic number, because the mean of its divisors is an integer number (22222546).

Almost surely, 2^44445091 is an apocalyptic number.

44445091 is a deficient number, since it is larger than the sum of its proper divisors (1).

44445091 is an equidigital number, since it uses as much as digits as its factorization.

44445091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 44445091 is about 6666.7151581570. The cubic root of 44445091 is about 354.2212407220.

The spelling of 44445091 in words is "forty-four million, four hundred forty-five thousand, ninety-one".