973504309 has 2 divisors, whose sum is σ = 973504310. Its totient is φ = 973504308.

The previous prime is 973504291. The next prime is 973504313. The reversal of 973504309 is 903405379.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 796481284 + 177023025 = 28222^2 + 13305^2 .

It is a cyclic number.

It is not a de Polignac number, because 973504309 - 2¹¹ = 973502261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (973504109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486752154 + 486752155.

It is an arithmetic number, because the mean of its divisors is an integer number (486752155).

Almost surely, 2^973504309 is an apocalyptic number.

It is an amenable number.

973504309 is a deficient number, since it is larger than the sum of its proper divisors (1).

973504309 is an equidigital number, since it uses as much as digits as its factorization.

973504309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 973504309 is about 31201.0305759281. The cubic root of 973504309 is about 991.0889317298.

The spelling of 973504309 in words is "nine hundred seventy-three million, five hundred four thousand, three hundred nine".