9901441091 has 2 divisors, whose sum is σ = 9901441092. Its totient is φ = 9901441090.

The previous prime is 9901441003. The next prime is 9901441103. The reversal of 9901441091 is 1901441099.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9901441091 is a prime.

It is not a weakly prime, because it can be changed into another prime (9901443091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4950720545 + 4950720546.

It is an arithmetic number, because the mean of its divisors is an integer number (4950720546).

Almost surely, 2^9901441091 is an apocalyptic number.

9901441091 is a deficient number, since it is larger than the sum of its proper divisors (1).

9901441091 is an equidigital number, since it uses as much as digits as its factorization.

9901441091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 9901441091 is about 99505.9852018963. The cubic root of 9901441091 is about 2147.3333509213. Note that the first 4 decimals are identical.

The spelling of 9901441091 in words is "nine billion, nine hundred one million, four hundred forty-one thousand, ninety-one".