976489897 has 2 divisors, whose sum is σ = 976489898. Its totient is φ = 976489896.

The previous prime is 976489889. The next prime is 976489939. The reversal of 976489897 is 798984679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 894967056 + 81522841 = 29916^2 + 9029^2 .

It is a cyclic number.

It is not a de Polignac number, because 976489897 - 2³ = 976489889 is a prime.

It is not a weakly prime, because it can be changed into another prime (976489867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488244948 + 488244949.

It is an arithmetic number, because the mean of its divisors is an integer number (488244949).

Almost surely, 2^976489897 is an apocalyptic number.

It is an amenable number.

976489897 is a deficient number, since it is larger than the sum of its proper divisors (1).

976489897 is an equidigital number, since it uses as much as digits as its factorization.

976489897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54867456, while the sum is 67.

The square root of 976489897 is about 31248.8383304084. The cubic root of 976489897 is about 992.1010701874.

The spelling of 976489897 in words is "nine hundred seventy-six million, four hundred eighty-nine thousand, eight hundred ninety-seven".