9129385 has 8 divisors (see below), whose sum is σ = 10983816. Its totient is φ = 7284480.

The previous prime is 9129377. The next prime is 9129401. The reversal of 9129385 is 5839219.

9129385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1227664 + 7901721 = 1108^2 + 2811^2 .

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

It is not a de Polignac number, because 9129385 - 2³ = 9129377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64 + ... + 4273.

It is an arithmetic number, because the mean of its divisors is an integer number (1372977).

Almost surely, 2^9129385 is an apocalyptic number.

It is an amenable number.

9129385 is a deficient number, since it is larger than the sum of its proper divisors (1854431).

9129385 is a wasteful number, since it uses less digits than its factorization.

9129385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4763.

The product of its digits is 19440, while the sum is 37.

The square root of 9129385 is about 3021.4872165872. The cubic root of 9129385 is about 209.0004273398. Note that the first 3 decimals are identical.

It can be divided in two parts, 91293 and 85, that added together give a triangular number (91378 = T₄₂₇).

The spelling of 9129385 in words is "nine million, one hundred twenty-nine thousand, three hundred eighty-five".