889955999 has 2 divisors, whose sum is σ = 889956000. Its totient is φ = 889955998.

The previous prime is 889955987. The next prime is 889956007. The reversal of 889955999 is 999559988.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 889955999 - 2²⁴ = 873178783 is a prime.

It is a super-3 number, since 3×889955999³ (a number of 28 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (889954999) 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 as a sum of consecutive naturals, namely, 444977999 + 444978000.

It is an arithmetic number, because the mean of its divisors is an integer number (444978000).

Almost surely, 2^889955999 is an apocalyptic number.

889955999 is a deficient number, since it is larger than the sum of its proper divisors (1).

889955999 is an equidigital number, since it uses as much as digits as its factorization.

889955999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94478400, while the sum is 71.

The square root of 889955999 is about 29832.1303128020. The cubic root of 889955999 is about 961.8843194478.

The spelling of 889955999 in words is "eight hundred eighty-nine million, nine hundred fifty-five thousand, nine hundred ninety-nine".