91093745 has 8 divisors (see below), whose sum is σ = 110630016. Its totient is φ = 71996656.

The previous prime is 91093729. The next prime is 91093747. The reversal of 91093745 is 54739019.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 91093745 - 2⁴ = 91093729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91093699 and 91093708.

It is not an unprimeable number, because it can be changed into a prime (91093747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109337 + ... + 110166.

It is an arithmetic number, because the mean of its divisors is an integer number (13828752).

Almost surely, 2^91093745 is an apocalyptic number.

It is an amenable number.

91093745 is a deficient number, since it is larger than the sum of its proper divisors (19536271).

91093745 is a wasteful number, since it uses less digits than its factorization.

91093745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219591.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 91093745 is about 9544.3043224742. The cubic root of 91093745 is about 449.9485455571.

The spelling of 91093745 in words is "ninety-one million, ninety-three thousand, seven hundred forty-five".