975248749 has 2 divisors, whose sum is σ = 975248750. Its totient is φ = 975248748.

The previous prime is 975248713. The next prime is 975248753. The reversal of 975248749 is 947842579.

975248749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 894428649 + 80820100 = 29907^2 + 8990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-975248749 is a prime.

It is a super-2 number, since 2×975248749² = 1902220244852130002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 975248749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (975248779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487624374 + 487624375.

It is an arithmetic number, because the mean of its divisors is an integer number (487624375).

Almost surely, 2^975248749 is an apocalyptic number.

It is an amenable number.

975248749 is a deficient number, since it is larger than the sum of its proper divisors (1).

975248749 is an equidigital number, since it uses as much as digits as its factorization.

975248749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 55.

The square root of 975248749 is about 31228.9729097836. The cubic root of 975248749 is about 991.6805618874.

The spelling of 975248749 in words is "nine hundred seventy-five million, two hundred forty-eight thousand, seven hundred forty-nine".