899697983 has 2 divisors, whose sum is σ = 899697984. Its totient is φ = 899697982.

The previous prime is 899697961. The next prime is 899697991. The reversal of 899697983 is 389796998.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 899697983 - 2¹⁸ = 899435839 is a prime.

It is a super-2 number, since 2×899697983² = 1618912921228536578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (899697683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449848991 + 449848992.

It is an arithmetic number, because the mean of its divisors is an integer number (449848992).

Almost surely, 2^899697983 is an apocalyptic number.

899697983 is a deficient number, since it is larger than the sum of its proper divisors (1).

899697983 is an equidigital number, since it uses as much as digits as its factorization.

899697983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52907904, while the sum is 68.

The square root of 899697983 is about 29994.9659609742. The cubic root of 899697983 is about 965.3813746683.

The spelling of 899697983 in words is "eight hundred ninety-nine million, six hundred ninety-seven thousand, nine hundred eighty-three".