9213789901 has 4 divisors (see below), whose sum is σ = 9409828032. Its totient is φ = 9017751772.

The previous prime is 9213789887. The next prime is 9213790007. The reversal of 9213789901 is 1099873129.

9213789901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9213789901 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9213789601) 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 in 3 ways as a sum of consecutive naturals, for example, 98018995 + ... + 98019088.

It is an arithmetic number, because the mean of its divisors is an integer number (2352457008).

Almost surely, 2^9213789901 is an apocalyptic number.

It is an amenable number.

9213789901 is a deficient number, since it is larger than the sum of its proper divisors (196038131).

9213789901 is a wasteful number, since it uses less digits than its factorization.

9213789901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196038130.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 9213789901 is about 95988.4883775133. The cubic root of 9213789901 is about 2096.4255065419.

The spelling of 9213789901 in words is "nine billion, two hundred thirteen million, seven hundred eighty-nine thousand, nine hundred one".