972755447 has 2 divisors, whose sum is σ = 972755448. Its totient is φ = 972755446.

The previous prime is 972755437. The next prime is 972755473. The reversal of 972755447 is 744557279.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 972755447 - 2⁸ = 972755191 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 972755395 and 972755404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972755437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486377723 + 486377724.

It is an arithmetic number, because the mean of its divisors is an integer number (486377724).

Almost surely, 2^972755447 is an apocalyptic number.

972755447 is a deficient number, since it is larger than the sum of its proper divisors (1).

972755447 is an equidigital number, since it uses as much as digits as its factorization.

972755447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2469600, while the sum is 50.

The square root of 972755447 is about 31189.0276699996. The cubic root of 972755447 is about 990.8347369196.

The spelling of 972755447 in words is "nine hundred seventy-two million, seven hundred fifty-five thousand, four hundred forty-seven".