9010991001 has 8 divisors (see below), whose sum is σ = 12193978144. Its totient is φ = 5917665600.

The previous prime is 9010990997. The next prime is 9010991023. The reversal of 9010991001 is 1001990109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9010991001 - 2² = 9010990997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9010991001.

It is not an unprimeable number, because it can be changed into a prime (9010991201) 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, 22415200 + ... + 22415601.

It is an arithmetic number, because the mean of its divisors is an integer number (1524247268).

Almost surely, 2^9010991001 is an apocalyptic number.

It is an amenable number.

9010991001 is a deficient number, since it is larger than the sum of its proper divisors (3182987143).

9010991001 is a wasteful number, since it uses less digits than its factorization.

9010991001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44830871.

The product of its (nonzero) digits is 729, while the sum is 30.

The square root of 9010991001 is about 94926.2397917457. The cubic root of 9010991001 is about 2080.9302268696.

The spelling of 9010991001 in words is "nine billion, ten million, nine hundred ninety-one thousand, one".