9772439123 has 4 divisors (see below), whose sum is σ = 9869196048. Its totient is φ = 9675682200.

The previous prime is 9772439113. The next prime is 9772439129. The reversal of 9772439123 is 3219342779.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3219342779 = 2887 ⋅1115117.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9772439123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9772439129) 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, 48378311 + ... + 48378512.

It is an arithmetic number, because the mean of its divisors is an integer number (2467299012).

Almost surely, 2^9772439123 is an apocalyptic number.

9772439123 is a deficient number, since it is larger than the sum of its proper divisors (96756925).

9772439123 is a wasteful number, since it uses less digits than its factorization.

9772439123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96756924.

The product of its digits is 571536, while the sum is 47.

The square root of 9772439123 is about 98855.6479064297. The cubic root of 9772439123 is about 2137.9669691798.

The spelling of 9772439123 in words is "nine billion, seven hundred seventy-two million, four hundred thirty-nine thousand, one hundred twenty-three".