9099901 has 2 divisors, whose sum is σ = 9099902. Its totient is φ = 9099900.

The previous prime is 9099899. The next prime is 9099907. The reversal of 9099901 is 1099909.

9099901 is digitally balanced in base 3, 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., 4995225 + 4104676 = 2235^2 + 2026^2 .

It is a cyclic number.

It is not a de Polignac number, because 9099901 - 2¹ = 9099899 is a prime.

Together with 9099899, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9099907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4549950 + 4549951.

It is an arithmetic number, because the mean of its divisors is an integer number (4549951).

Almost surely, 2^9099901 is an apocalyptic number.

It is an amenable number.

9099901 is a deficient number, since it is larger than the sum of its proper divisors (1).

9099901 is an equidigital number, since it uses as much as digits as its factorization.

9099901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 37.

The square root of 9099901 is about 3016.6042166648. The cubic root of 9099901 is about 208.7751907640.

It can be divided in two parts, 9099 and 901, that added together give a 4-th power (10000 = 10⁴).

The spelling of 9099901 in words is "nine million, ninety-nine thousand, nine hundred one".