975242789 has 2 divisors, whose sum is σ = 975242790. Its totient is φ = 975242788.

The previous prime is 975242767. The next prime is 975242797. The reversal of 975242789 is 987242579.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 657512164 + 317730625 = 25642^2 + 17825^2 .

It is a cyclic number.

It is not a de Polignac number, because 975242789 - 2⁸ = 975242533 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 975242789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (975248789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487621394 + 487621395.

It is an arithmetic number, because the mean of its divisors is an integer number (487621395).

Almost surely, 2^975242789 is an apocalyptic number.

It is an amenable number.

975242789 is a deficient number, since it is larger than the sum of its proper divisors (1).

975242789 is an equidigital number, since it uses as much as digits as its factorization.

975242789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 53.

The square root of 975242789 is about 31228.8774854301. The cubic root of 975242789 is about 991.6785417436.

The spelling of 975242789 in words is "nine hundred seventy-five million, two hundred forty-two thousand, seven hundred eighty-nine".