91429443 has 36 divisors (see below), whose sum is σ = 154756368. Its totient is φ = 51861600.

The previous prime is 91429427. The next prime is 91429483. The reversal of 91429443 is 34492419.

It is not a de Polignac number, because 91429443 - 2⁴ = 91429427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91429398 and 91429407.

It is not an unprimeable number, because it can be changed into a prime (91429483) 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 in 35 ways as a sum of consecutive naturals, for example, 65905 + ... + 67277.

It is an arithmetic number, because the mean of its divisors is an integer number (4298788).

Almost surely, 2^91429443 is an apocalyptic number.

91429443 is a deficient number, since it is larger than the sum of its proper divisors (63326925).

91429443 is a wasteful number, since it uses less digits than its factorization.

91429443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544 (or 1534 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 91429443 is about 9561.8744501274. The cubic root of 91429443 is about 450.5005836809.

The spelling of 91429443 in words is "ninety-one million, four hundred twenty-nine thousand, four hundred forty-three".