9910000091 has 8 divisors (see below), whose sum is σ = 9968737680. Its totient is φ = 9851300352.

The previous prime is 9910000057. The next prime is 9910000097. The reversal of 9910000091 is 1900000199.

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 9910000091 - 2⁶ = 9910000027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9910000097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649931 + ... + 665003.

It is an arithmetic number, because the mean of its divisors is an integer number (1246092210).

Almost surely, 2^9910000091 is an apocalyptic number.

9910000091 is a deficient number, since it is larger than the sum of its proper divisors (58737589).

9910000091 is a wasteful number, since it uses less digits than its factorization.

9910000091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18925.

The product of its (nonzero) digits is 729, while the sum is 29.

The square root of 9910000091 is about 99548.9833750200. The cubic root of 9910000091 is about 2147.9519050891.

The spelling of 9910000091 in words is "nine billion, nine hundred ten million, ninety-one", and thus it is an aban number.