9490791021001 has 2 divisors, whose sum is σ = 9490791021002. Its totient is φ = 9490791021000.

The previous prime is 9490791020983. The next prime is 9490791021059. The reversal of 9490791021001 is 1001201970949.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5136478304400 + 4354312716601 = 2266380^2 + 2086699^2 .

It is an emirp because it is prime and its reverse (1001201970949) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9490791021001 - 2¹⁷ = 9490790889929 is a prime.

It is a super-2 number, since 2×9490791021001² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9490741021001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4745395510500 + 4745395510501.

It is an arithmetic number, because the mean of its divisors is an integer number (4745395510501).

Almost surely, 2^{9490791021001} is an apocalyptic number.

It is an amenable number.

9490791021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

9490791021001 is an equidigital number, since it uses as much as digits as its factorization.

9490791021001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 43.

The spelling of 9490791021001 in words is "nine trillion, four hundred ninety billion, seven hundred ninety-one million, twenty-one thousand, one".