43444091 has 2 divisors, whose sum is σ = 43444092. Its totient is φ = 43444090.

The previous prime is 43444067. The next prime is 43444097. The reversal of 43444091 is 19044434.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43444091 - 2¹⁸ = 43181947 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (43444097) 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, 21722045 + 21722046.

It is an arithmetic number, because the mean of its divisors is an integer number (21722046).

Almost surely, 2^43444091 is an apocalyptic number.

43444091 is a deficient number, since it is larger than the sum of its proper divisors (1).

43444091 is an equidigital number, since it uses as much as digits as its factorization.

43444091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 43444091 is about 6591.2131660264. The cubic root of 43444091 is about 351.5417455969.

The spelling of 43444091 in words is "forty-three million, four hundred forty-four thousand, ninety-one".