9129745 has 8 divisors (see below), whose sum is σ = 11106216. Its totient is φ = 7203456.

The previous prime is 9129739. The next prime is 9129761. The reversal of 9129745 is 5479219.

It can be written as a sum of positive squares in 4 ways, for example, as 3825936 + 5303809 = 1956^2 + 2303^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 9129745 - 2¹¹ = 9127697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12142 + ... + 12871.

It is an arithmetic number, because the mean of its divisors is an integer number (1388277).

Almost surely, 2^9129745 is an apocalyptic number.

It is an amenable number.

9129745 is a deficient number, since it is larger than the sum of its proper divisors (1976471).

9129745 is a wasteful number, since it uses less digits than its factorization.

9129745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25091.

The product of its digits is 22680, while the sum is 37.

The square root of 9129745 is about 3021.5467893117. The cubic root of 9129745 is about 209.0031744823.

The spelling of 9129745 in words is "nine million, one hundred twenty-nine thousand, seven hundred forty-five".