9090691727 has 16 divisors (see below), whose sum is σ = 10072917792. Its totient is φ = 8149714560.

The previous prime is 9090691703. The next prime is 9090691747. The reversal of 9090691727 is 7271960909.

It is not a de Polignac number, because 9090691727 - 2¹⁸ = 9090429583 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090691747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250952 + ... + 284882.

It is an arithmetic number, because the mean of its divisors is an integer number (629557362).

Almost surely, 2^9090691727 is an apocalyptic number.

9090691727 is a deficient number, since it is larger than the sum of its proper divisors (982226065).

9090691727 is a wasteful number, since it uses less digits than its factorization.

9090691727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34538.

The product of its (nonzero) digits is 428652, while the sum is 50.

The square root of 9090691727 is about 95345.1190517900. The cubic root of 9090691727 is about 2087.0473883695.

The spelling of 9090691727 in words is "nine billion, ninety million, six hundred ninety-one thousand, seven hundred twenty-seven".