9139134827 has 4 divisors (see below), whose sum is σ = 9139352736. Its totient is φ = 9138916920.

The previous prime is 9139134779. The next prime is 9139134833. The reversal of 9139134827 is 7284319319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7284319319 = 12743 ⋅571633.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9139134827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9139134887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23924 + ... + 137297.

It is an arithmetic number, because the mean of its divisors is an integer number (2284838184).

Almost surely, 2^9139134827 is an apocalyptic number.

9139134827 is a deficient number, since it is larger than the sum of its proper divisors (217909).

9139134827 is a wasteful number, since it uses less digits than its factorization.

9139134827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217908.

The product of its digits is 326592, while the sum is 47.

The square root of 9139134827 is about 95598.8223096917. The cubic root of 9139134827 is about 2090.7480230364.

The spelling of 9139134827 in words is "nine billion, one hundred thirty-nine million, one hundred thirty-four thousand, eight hundred twenty-seven".