85274939 has 2 divisors, whose sum is σ = 85274940. Its totient is φ = 85274938.

The previous prime is 85274921. The next prime is 85274963. The reversal of 85274939 is 93947258.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85274939 - 2¹⁶ = 85209403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85274893 and 85274902.

It is not a weakly prime, because it can be changed into another prime (85274909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42637469 + 42637470.

It is an arithmetic number, because the mean of its divisors is an integer number (42637470).

Almost surely, 2^85274939 is an apocalyptic number.

85274939 is a deficient number, since it is larger than the sum of its proper divisors (1).

85274939 is an equidigital number, since it uses as much as digits as its factorization.

85274939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 85274939 is about 9234.4430801213. The cubic root of 85274939 is about 440.1565197284.

The spelling of 85274939 in words is "eighty-five million, two hundred seventy-four thousand, nine hundred thirty-nine".