997219883 has 16 divisors (see below), whose sum is σ = 1152464640. Its totient is φ = 853351200.

The previous prime is 997219879. The next prime is 997219891. The reversal of 997219883 is 388912799.

It is a cyclic number.

It is not a de Polignac number, because 997219883 - 2² = 997219879 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997219823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17618 + ... + 48008.

It is an arithmetic number, because the mean of its divisors is an integer number (72029040).

Almost surely, 2^997219883 is an apocalyptic number.

997219883 is a deficient number, since it is larger than the sum of its proper divisors (155244757).

997219883 is a wasteful number, since it uses less digits than its factorization.

997219883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30578.

The product of its digits is 1959552, while the sum is 56.

The square root of 997219883 is about 31578.7884979776. The cubic root of 997219883 is about 999.0724342211.

The spelling of 997219883 in words is "nine hundred ninety-seven million, two hundred nineteen thousand, eight hundred eighty-three".