91049763 has 32 divisors (see below), whose sum is σ = 146626560. Its totient is φ = 49150080.

The previous prime is 91049747. The next prime is 91049839. The reversal of 91049763 is 36794019.

It is a Cunningham number, because it is equal to 9542²-1.

It is not a de Polignac number, because 91049763 - 2⁴ = 91049747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91049723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27033 + ... + 30213.

It is an arithmetic number, because the mean of its divisors is an integer number (4582080).

Almost surely, 2^91049763 is an apocalyptic number.

91049763 is a deficient number, since it is larger than the sum of its proper divisors (55576797).

91049763 is a wasteful number, since it uses less digits than its factorization.

91049763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 91049763 is about 9541.9999476001. Note that the first 4 decimals coincide. The cubic root of 91049763 is about 449.8761189862.

The spelling of 91049763 in words is "ninety-one million, forty-nine thousand, seven hundred sixty-three".