91476729 has 16 divisors (see below), whose sum is σ = 136171840. Its totient is φ = 60691680.

The previous prime is 91476719. The next prime is 91476751. The reversal of 91476729 is 92767419.

It is not a de Polignac number, because 91476729 - 2⁷ = 91476601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91476709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2332 + ... + 13725.

It is an arithmetic number, because the mean of its divisors is an integer number (8510740).

Almost surely, 2^91476729 is an apocalyptic number.

It is an amenable number.

91476729 is a deficient number, since it is larger than the sum of its proper divisors (44695111).

91476729 is a wasteful number, since it uses less digits than its factorization.

91476729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16277 (or 16271 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 91476729 is about 9564.3467628479. The cubic root of 91476729 is about 450.5782344482.

It can be divided in two parts, 9147 and 6729, that added together give a square (15876 = 126²).

The spelling of 91476729 in words is "ninety-one million, four hundred seventy-six thousand, seven hundred twenty-nine".