985225877 has 2 divisors, whose sum is σ = 985225878. Its totient is φ = 985225876.

The previous prime is 985225873. The next prime is 985225909. The reversal of 985225877 is 778522589.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 909082801 + 76143076 = 30151^2 + 8726^2 .

It is a cyclic number.

It is not a de Polignac number, because 985225877 - 2² = 985225873 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985225873) 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, 492612938 + 492612939.

It is an arithmetic number, because the mean of its divisors is an integer number (492612939).

Almost surely, 2^985225877 is an apocalyptic number.

It is an amenable number.

985225877 is a deficient number, since it is larger than the sum of its proper divisors (1).

985225877 is an equidigital number, since it uses as much as digits as its factorization.

985225877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2822400, while the sum is 53.

The square root of 985225877 is about 31388.3079665024. The cubic root of 985225877 is about 995.0508385428.

The spelling of 985225877 in words is "nine hundred eighty-five million, two hundred twenty-five thousand, eight hundred seventy-seven".