997476889 has 2 divisors, whose sum is σ = 997476890. Its totient is φ = 997476888.

The previous prime is 997476871. The next prime is 997476967. The reversal of 997476889 is 988674799.

997476889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 874089225 + 123387664 = 29565^2 + 11108^2 .

It is a cyclic number.

It is not a de Polignac number, because 997476889 - 2¹³ = 997468697 is a prime.

It is not a weakly prime, because it can be changed into another prime (997476859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498738444 + 498738445.

It is an arithmetic number, because the mean of its divisors is an integer number (498738445).

Almost surely, 2^997476889 is an apocalyptic number.

It is an amenable number.

997476889 is a deficient number, since it is larger than the sum of its proper divisors (1).

997476889 is an equidigital number, since it uses as much as digits as its factorization.

997476889 is an odious number, because the sum of its binary digits is odd.

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

The square root of 997476889 is about 31582.8575179638. The cubic root of 997476889 is about 999.1582546636.

The spelling of 997476889 in words is "nine hundred ninety-seven million, four hundred seventy-six thousand, eight hundred eighty-nine".