985399927 has 2 divisors, whose sum is σ = 985399928. Its totient is φ = 985399926.

The previous prime is 985399913. The next prime is 985399939. The reversal of 985399927 is 729993589.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985399927 is a prime.

It is a super-2 number, since 2×985399927² = 1942026032263210658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985399957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492699963 + 492699964.

It is an arithmetic number, because the mean of its divisors is an integer number (492699964).

Almost surely, 2^985399927 is an apocalyptic number.

985399927 is a deficient number, since it is larger than the sum of its proper divisors (1).

985399927 is an equidigital number, since it uses as much as digits as its factorization.

985399927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11022480, while the sum is 61.

The square root of 985399927 is about 31391.0803732525. The cubic root of 985399927 is about 995.1094303185.

The spelling of 985399927 in words is "nine hundred eighty-five million, three hundred ninety-nine thousand, nine hundred twenty-seven".