91475383 has 2 divisors, whose sum is σ = 91475384. Its totient is φ = 91475382.

The previous prime is 91475381. The next prime is 91475401. The reversal of 91475383 is 38357419.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91475383 - 2¹ = 91475381 is a prime.

Together with 91475381, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91475381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45737691 + 45737692.

It is an arithmetic number, because the mean of its divisors is an integer number (45737692).

Almost surely, 2^91475383 is an apocalyptic number.

91475383 is a deficient number, since it is larger than the sum of its proper divisors (1).

91475383 is an equidigital number, since it uses as much as digits as its factorization.

91475383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 91475383 is about 9564.2763970935. The cubic root of 91475383 is about 450.5760244826.

The spelling of 91475383 in words is "ninety-one million, four hundred seventy-five thousand, three hundred eighty-three".