97128943 has 2 divisors, whose sum is σ = 97128944. Its totient is φ = 97128942.

The previous prime is 97128937. The next prime is 97128949. The reversal of 97128943 is 34982179.

It is a balanced prime because it is at equal distance from previous prime (97128937) and next prime (97128949).

It is a cyclic number.

It is not a de Polignac number, because 97128943 - 2¹⁷ = 96997871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97128943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97128949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48564471 + 48564472.

It is an arithmetic number, because the mean of its divisors is an integer number (48564472).

Almost surely, 2^97128943 is an apocalyptic number.

97128943 is a deficient number, since it is larger than the sum of its proper divisors (1).

97128943 is an equidigital number, since it uses as much as digits as its factorization.

97128943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 97128943 is about 9855.4017168251. The cubic root of 97128943 is about 459.6735916923.

The spelling of 97128943 in words is "ninety-seven million, one hundred twenty-eight thousand, nine hundred forty-three".