91338755 has 16 divisors (see below), whose sum is σ = 114264480. Its totient is φ = 70025472.

The previous prime is 91338749. The next prime is 91338763. The reversal of 91338755 is 55783319.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 91338755 - 2¹⁸ = 91076611 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8711 + ... + 16079.

It is an arithmetic number, because the mean of its divisors is an integer number (7141530).

Almost surely, 2^91338755 is an apocalyptic number.

91338755 is a deficient number, since it is larger than the sum of its proper divisors (22925725).

91338755 is a wasteful number, since it uses less digits than its factorization.

91338755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7478.

The product of its digits is 113400, while the sum is 41.

The square root of 91338755 is about 9557.1311071890. The cubic root of 91338755 is about 450.3515853169.

The spelling of 91338755 in words is "ninety-one million, three hundred thirty-eight thousand, seven hundred fifty-five".