9172942859 has 4 divisors (see below), whose sum is σ = 9368111904. Its totient is φ = 8977773816.

The previous prime is 9172942853. The next prime is 9172942871. The reversal of 9172942859 is 9582492719.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9172942859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9172942853) 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, 97584452 + ... + 97584545.

It is an arithmetic number, because the mean of its divisors is an integer number (2342027976).

Almost surely, 2^9172942859 is an apocalyptic number.

9172942859 is a deficient number, since it is larger than the sum of its proper divisors (195169045).

9172942859 is a wasteful number, since it uses less digits than its factorization.

9172942859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195169044.

The product of its digits is 3265920, while the sum is 56.

The square root of 9172942859 is about 95775.4815127546. The cubic root of 9172942859 is about 2093.3229237794.

The spelling of 9172942859 in words is "nine billion, one hundred seventy-two million, nine hundred forty-two thousand, eight hundred fifty-nine".