975784900949 has 2 divisors, whose sum is σ = 975784900950. Its totient is φ = 975784900948.

The previous prime is 975784900907. The next prime is 975784900963. The reversal of 975784900949 is 949009487579.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 902465800324 + 73319100625 = 949982^2 + 270775^2 .

It is an emirp because it is prime and its reverse (949009487579) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 975784900949 - 2³² = 971489933653 is a prime.

It is a super-2 number, since 2×975784900949² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (975784900999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487892450474 + 487892450475.

It is an arithmetic number, because the mean of its divisors is an integer number (487892450475).

Almost surely, 2^975784900949 is an apocalyptic number.

It is an amenable number.

975784900949 is a deficient number, since it is larger than the sum of its proper divisors (1).

975784900949 is an equidigital number, since it uses as much as digits as its factorization.

975784900949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 205752960, while the sum is 71.

The spelling of 975784900949 in words is "nine hundred seventy-five billion, seven hundred eighty-four million, nine hundred thousand, nine hundred forty-nine".