9129213 has 8 divisors (see below), whose sum is σ = 13524800. Its totient is φ = 6086124.

The previous prime is 9129203. The next prime is 9129257. The reversal of 9129213 is 3129219.

9129213 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9129213 - 2⁵ = 9129181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 338119 = 9129213 / (9 + 1 + 2 + 9 + 2 + 1 + 3).

It is a Duffinian number.

9129213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9129203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169033 + ... + 169086.

It is an arithmetic number, because the mean of its divisors is an integer number (1690600).

Almost surely, 2^9129213 is an apocalyptic number.

It is an amenable number.

9129213 is a deficient number, since it is larger than the sum of its proper divisors (4395587).

9129213 is a wasteful number, since it uses less digits than its factorization.

9129213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338128 (or 338122 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 9129213 is about 3021.4587536486. The cubic root of 9129213 is about 208.9991147906. Note that the first 3 decimals are identical.

The spelling of 9129213 in words is "nine million, one hundred twenty-nine thousand, two hundred thirteen".