9990990701 has 2 divisors, whose sum is σ = 9990990702. Its totient is φ = 9990990700.

The previous prime is 9990990689. The next prime is 9990990739. The reversal of 9990990701 is 1070990999.

9990990701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9989802601 + 1188100 = 99949^2 + 1090^2 .

It is a cyclic number.

It is not a de Polignac number, because 9990990701 - 2⁶ = 9990990637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9990990781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4995495350 + 4995495351.

It is an arithmetic number, because the mean of its divisors is an integer number (4995495351).

Almost surely, 2^9990990701 is an apocalyptic number.

It is an amenable number.

9990990701 is a deficient number, since it is larger than the sum of its proper divisors (1).

9990990701 is an equidigital number, since it uses as much as digits as its factorization.

9990990701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 413343, while the sum is 53.

The square root of 9990990701 is about 99954.9433544935. The cubic root of 9990990701 is about 2153.7874974246.

The spelling of 9990990701 in words is "nine billion, nine hundred ninety million, nine hundred ninety thousand, seven hundred one".