91371471 has 8 divisors (see below), whose sum is σ = 123893760. Its totient is φ = 59881752.

The previous prime is 91371439. The next prime is 91371491. The reversal of 91371471 is 17417319.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91371471 - 2⁵ = 91371439 is a prime.

It is a super-3 number, since 3×91371471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91371491) 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 7 ways as a sum of consecutive naturals, for example, 257935 + ... + 258288.

It is an arithmetic number, because the mean of its divisors is an integer number (15486720).

Almost surely, 2^91371471 is an apocalyptic number.

91371471 is a deficient number, since it is larger than the sum of its proper divisors (32522289).

91371471 is a wasteful number, since it uses less digits than its factorization.

91371471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516285.

The product of its digits is 5292, while the sum is 33.

The square root of 91371471 is about 9558.8425554562. The cubic root of 91371471 is about 450.4053483433.

The spelling of 91371471 in words is "ninety-one million, three hundred seventy-one thousand, four hundred seventy-one".