9091957689 has 24 divisors (see below), whose sum is σ = 13199632992. Its totient is φ = 6030528000.

The previous prime is 9091957681. The next prime is 9091957727. The reversal of 9091957689 is 9867591909.

It is not a de Polignac number, because 9091957689 - 2³ = 9091957681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9091957681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2896729 + ... + 2899865.

It is an arithmetic number, because the mean of its divisors is an integer number (549984708).

Almost surely, 2^9091957689 is an apocalyptic number.

It is an amenable number.

9091957689 is a deficient number, since it is larger than the sum of its proper divisors (4107675303).

9091957689 is a wasteful number, since it uses less digits than its factorization.

9091957689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4677 (or 4674 counting only the distinct ones).

The product of its (nonzero) digits is 11022480, while the sum is 63.

The square root of 9091957689 is about 95351.7576607794. The cubic root of 9091957689 is about 2087.1442640209.

The spelling of 9091957689 in words is "nine billion, ninety-one million, nine hundred fifty-seven thousand, six hundred eighty-nine".