964821973 has 2 divisors, whose sum is σ = 964821974. Its totient is φ = 964821972.

The previous prime is 964821941. The next prime is 964821983. The reversal of 964821973 is 379128469.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 939238609 + 25583364 = 30647^2 + 5058^2 .

It is a cyclic number.

It is not a de Polignac number, because 964821973 - 2⁵ = 964821941 is a prime.

It is a super-2 number, since 2×964821973² = 1861762879167225458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (964821983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482410986 + 482410987.

It is an arithmetic number, because the mean of its divisors is an integer number (482410987).

Almost surely, 2^964821973 is an apocalyptic number.

It is an amenable number.

964821973 is a deficient number, since it is larger than the sum of its proper divisors (1).

964821973 is an equidigital number, since it uses as much as digits as its factorization.

964821973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 964821973 is about 31061.5835558975. The cubic root of 964821973 is about 988.1337398248.

The spelling of 964821973 in words is "nine hundred sixty-four million, eight hundred twenty-one thousand, nine hundred seventy-three".