9129139 has 8 divisors (see below), whose sum is σ = 9815040. Its totient is φ = 8463816.

The previous prime is 9129073. The next prime is 9129149. The reversal of 9129139 is 9319219.

9129139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9129139 - 2¹¹ = 9127091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9129149) 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, 4219 + ... + 6004.

It is an arithmetic number, because the mean of its divisors is an integer number (1226880).

Almost surely, 2^9129139 is an apocalyptic number.

9129139 is a deficient number, since it is larger than the sum of its proper divisors (685901).

9129139 is a wasteful number, since it uses less digits than its factorization.

9129139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10289.

The product of its digits is 4374, while the sum is 34.

The square root of 9129139 is about 3021.4465078833. The cubic root of 9129139 is about 208.9985500842.

The spelling of 9129139 in words is "nine million, one hundred twenty-nine thousand, one hundred thirty-nine".