995590889 has 2 divisors, whose sum is σ = 995590890. Its totient is φ = 995590888.

The previous prime is 995590879. The next prime is 995590913. The reversal of 995590889 is 988095599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 651117289 + 344473600 = 25517^2 + 18560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-995590889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (995590879) 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, 497795444 + 497795445.

It is an arithmetic number, because the mean of its divisors is an integer number (497795445).

Almost surely, 2^995590889 is an apocalyptic number.

It is an amenable number.

995590889 is a deficient number, since it is larger than the sum of its proper divisors (1).

995590889 is an equidigital number, since it uses as much as digits as its factorization.

995590889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10497600, while the sum is 62.

The square root of 995590889 is about 31552.9854213512. The cubic root of 995590889 is about 998.5281309979.

The spelling of 995590889 in words is "nine hundred ninety-five million, five hundred ninety thousand, eight hundred eighty-nine".