9091409091 has 16 divisors (see below), whose sum is σ = 12699675648. Its totient is φ = 5777877600.

The previous prime is 9091409081. The next prime is 9091409101. The reversal of 9091409091 is 1909041909.

9091409091 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9091409081) and next prime (9091409101).

It is not a de Polignac number, because 9091409091 - 2²³ = 9083020483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9091409071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723300 + ... + 735761.

It is an arithmetic number, because the mean of its divisors is an integer number (793729728).

Almost surely, 2^9091409091 is an apocalyptic number.

9091409091 is a deficient number, since it is larger than the sum of its proper divisors (3608266557).

9091409091 is a wasteful number, since it uses less digits than its factorization.

9091409091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459162.

The product of its (nonzero) digits is 26244, while the sum is 42.

The square root of 9091409091 is about 95348.8809111046. The cubic root of 9091409091 is about 2087.1022845691.

The spelling of 9091409091 in words is "nine billion, ninety-one million, four hundred nine thousand, ninety-one".