91427434 has 24 divisors (see below), whose sum is σ = 161040960. Its totient is φ = 38812536.

The previous prime is 91427429. The next prime is 91427437. The reversal of 91427434 is 43472419.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 91427434.

It is not an unprimeable number, because it can be changed into a prime (91427437) 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 11 ways as a sum of consecutive naturals, for example, 6127 + ... + 14845.

It is an arithmetic number, because the mean of its divisors is an integer number (6710040).

Almost surely, 2^91427434 is an apocalyptic number.

91427434 is a deficient number, since it is larger than the sum of its proper divisors (69613526).

91427434 is a wasteful number, since it uses less digits than its factorization.

91427434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8842 (or 8835 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 91427434 is about 9561.7693969265. The cubic root of 91427434 is about 450.4972840060.

The spelling of 91427434 in words is "ninety-one million, four hundred twenty-seven thousand, four hundred thirty-four".