1043400091 has 2 divisors, whose sum is σ = 1043400092. Its totient is φ = 1043400090.

The previous prime is 1043400089. The next prime is 1043400097. The reversal of 1043400091 is 1900043401.

1043400091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1043400091 - 2¹ = 1043400089 is a prime.

Together with 1043400089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1043400097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521700045 + 521700046.

It is an arithmetic number, because the mean of its divisors is an integer number (521700046).

Almost surely, 2^1043400091 is an apocalyptic number.

1043400091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043400091 is an equidigital number, since it uses as much as digits as its factorization.

1043400091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1043400091 is about 32301.7041500909. The cubic root of 1043400091 is about 1014.2623162842.

Adding to 1043400091 its reverse (1900043401), we get a palindrome (2943443492).

The spelling of 1043400091 in words is "one billion, forty-three million, four hundred thousand, ninety-one".