973261309 has 2 divisors, whose sum is σ = 973261310. Its totient is φ = 973261308.

The previous prime is 973261291. The next prime is 973261349. The reversal of 973261309 is 903162379.

It is an a-pointer prime, because the next prime (973261349) can be obtained adding 973261309 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 715562500 + 257698809 = 26750^2 + 16053^2 .

It is a cyclic number.

It is not a de Polignac number, because 973261309 - 2⁹ = 973260797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (973261349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486630654 + 486630655.

It is an arithmetic number, because the mean of its divisors is an integer number (486630655).

Almost surely, 2^973261309 is an apocalyptic number.

It is an amenable number.

973261309 is a deficient number, since it is larger than the sum of its proper divisors (1).

973261309 is an equidigital number, since it uses as much as digits as its factorization.

973261309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 973261309 is about 31197.1362307504. The cubic root of 973261309 is about 991.0064617467.

The spelling of 973261309 in words is "nine hundred seventy-three million, two hundred sixty-one thousand, three hundred nine".