91430443 has 4 divisors (see below), whose sum is σ = 98463568. Its totient is φ = 84397320.

The previous prime is 91430431. The next prime is 91430453. The reversal of 91430443 is 34403419.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91430443 - 2⁹ = 91429931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91430453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3516543 + ... + 3516568.

It is an arithmetic number, because the mean of its divisors is an integer number (24615892).

Almost surely, 2^91430443 is an apocalyptic number.

91430443 is a deficient number, since it is larger than the sum of its proper divisors (7033125).

91430443 is a wasteful number, since it uses less digits than its factorization.

91430443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7033124.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 91430443 is about 9561.9267409869. The cubic root of 91430443 is about 450.5022261093.

The spelling of 91430443 in words is "ninety-one million, four hundred thirty thousand, four hundred forty-three".