91600445 has 8 divisors (see below), whose sum is σ = 110053944. Its totient is φ = 73191424.

The previous prime is 91600433. The next prime is 91600447. The reversal of 91600445 is 54400619.

It can be written as a sum of positive squares in 4 ways, for example, as 8826841 + 82773604 = 2971^2 + 9098^2 .

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 91600445 - 2⁴ = 91600429 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 (91600447) 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, 6404 + ... + 14973.

It is an arithmetic number, because the mean of its divisors is an integer number (13756743).

Almost surely, 2^91600445 is an apocalyptic number.

It is an amenable number.

91600445 is a deficient number, since it is larger than the sum of its proper divisors (18453499).

91600445 is a wasteful number, since it uses less digits than its factorization.

91600445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22239.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 91600445 is about 9570.8121389984. The cubic root of 91600445 is about 450.7812683290.

The spelling of 91600445 in words is "ninety-one million, six hundred thousand, four hundred forty-five".