9139730 has 16 divisors (see below), whose sum is σ = 16982784. Its totient is φ = 3537840.

The previous prime is 9139723. The next prime is 9139751. The reversal of 9139730 is 379319.

It is a happy number.

It is a Curzon 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, 14432 + ... + 15051.

It is an arithmetic number, because the mean of its divisors is an integer number (1061424).

Almost surely, 2^9139730 is an apocalyptic number.

9139730 is a deficient number, since it is larger than the sum of its proper divisors (7843054).

9139730 is a wasteful number, since it uses less digits than its factorization.

9139730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29521.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 9139730 is about 3023.1986372053. The cubic root of 9139730 is about 209.0793407703.

The spelling of 9139730 in words is "nine million, one hundred thirty-nine thousand, seven hundred thirty".