9972748837 has 2 divisors, whose sum is σ = 9972748838. Its totient is φ = 9972748836.

The previous prime is 9972748783. The next prime is 9972748867. The reversal of 9972748837 is 7388472799.

Together with previous prime (9972748783) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6863459716 + 3109289121 = 82846^2 + 55761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9972748837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9972748867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4986374418 + 4986374419.

It is an arithmetic number, because the mean of its divisors is an integer number (4986374419).

Almost surely, 2^9972748837 is an apocalyptic number.

It is an amenable number.

9972748837 is a deficient number, since it is larger than the sum of its proper divisors (1).

9972748837 is an equidigital number, since it uses as much as digits as its factorization.

9972748837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42674688, while the sum is 64.

The square root of 9972748837 is about 99863.6512300647. The cubic root of 9972748837 is about 2152.4758812620.

The spelling of 9972748837 in words is "nine billion, nine hundred seventy-two million, seven hundred forty-eight thousand, eight hundred thirty-seven".