91383463 has 4 divisors (see below), whose sum is σ = 93327840. Its totient is φ = 89439088.

The previous prime is 91383431. The next prime is 91383497. The reversal of 91383463 is 36438319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36438319 = 113 ⋅322463.

It is a cyclic number.

It is not a de Polignac number, because 91383463 - 2⁵ = 91383431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91383563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972118 + ... + 972211.

It is an arithmetic number, because the mean of its divisors is an integer number (23331960).

Almost surely, 2^91383463 is an apocalyptic number.

91383463 is a deficient number, since it is larger than the sum of its proper divisors (1944377).

91383463 is a wasteful number, since it uses less digits than its factorization.

91383463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944376.

The product of its digits is 46656, while the sum is 37.

The square root of 91383463 is about 9559.4698074736. The cubic root of 91383463 is about 450.4250518846.

The spelling of 91383463 in words is "ninety-one million, three hundred eighty-three thousand, four hundred sixty-three".