9976722727 has 4 divisors (see below), whose sum is σ = 9983735200. Its totient is φ = 9969710256.

The previous prime is 9976722713. The next prime is 9976722737. The reversal of 9976722727 is 7272276799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7272276799 = 499 ⋅14573701.

It is a cyclic number.

It is not a de Polignac number, because 9976722727 - 2⁷ = 9976722599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9976722737) 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, 3504102 + ... + 3506947.

It is an arithmetic number, because the mean of its divisors is an integer number (2495933800).

Almost surely, 2^9976722727 is an apocalyptic number.

9976722727 is a deficient number, since it is larger than the sum of its proper divisors (7012473).

9976722727 is a wasteful number, since it uses less digits than its factorization.

9976722727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7012472.

The product of its digits is 9335088, while the sum is 58.

The square root of 9976722727 is about 99883.5458271281. The cubic root of 9976722727 is about 2152.7617458257.

The spelling of 9976722727 in words is "nine billion, nine hundred seventy-six million, seven hundred twenty-two thousand, seven hundred twenty-seven".