976730960209 has 3 divisors (see below), whose sum is σ = 976731948507. Its totient is φ = 976729971912.

The previous prime is 976730960189. The next prime is 976730960213. The reversal of 976730960209 is 902069037679.

The square root of 976730960209 is 988297.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 902069037679 = 109 ⋅8275862731.

It can be written as a sum of positive squares in only one way, i.e., 840623091025 + 136107869184 = 916855^2 + 368928^2 .

It is not a de Polignac number, because 976730960209 - 2⁹ = 976730959697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (976730961209) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 494149 + ... + 1482445.

It is an arithmetic number, because the mean of its divisors is an integer number (325577316169).

Almost surely, 2^976730960209 is an apocalyptic number.

976730960209 is the 988297-th square number.

976730960209 is the 494149-th centered octagonal number.

It is an amenable number.

976730960209 is a deficient number, since it is larger than the sum of its proper divisors (988298).

976730960209 is an frugal number, since it uses more digits than its factorization.

976730960209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976594 (or 988297 counting only the distinct ones).

The product of its (nonzero) digits is 7715736, while the sum is 58.

The spelling of 976730960209 in words is "nine hundred seventy-six billion, seven hundred thirty million, nine hundred sixty thousand, two hundred nine".