43342891 has 2 divisors, whose sum is σ = 43342892. Its totient is φ = 43342890.

The previous prime is 43342861. The next prime is 43342913. The reversal of 43342891 is 19824334.

43342891 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 43342891 - 2⁷ = 43342763 is a prime.

It is not a weakly prime, because it can be changed into another prime (43342861) 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, 21671445 + 21671446.

It is an arithmetic number, because the mean of its divisors is an integer number (21671446).

Almost surely, 2^43342891 is an apocalyptic number.

43342891 is a deficient number, since it is larger than the sum of its proper divisors (1).

43342891 is an equidigital number, since it uses as much as digits as its factorization.

43342891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 43342891 is about 6583.5318029155. The cubic root of 43342891 is about 351.2685693251.

It can be divided in two parts, 4334 and 2891, that added together give a square (7225 = 85²).

The spelling of 43342891 in words is "forty-three million, three hundred forty-two thousand, eight hundred ninety-one".