85047499 has 2 divisors, whose sum is σ = 85047500. Its totient is φ = 85047498.

The previous prime is 85047449. The next prime is 85047511. The reversal of 85047499 is 99474058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85047499 - 2⁹ = 85046987 is a prime.

It is not a weakly prime, because it can be changed into another prime (85047449) 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, 42523749 + 42523750.

It is an arithmetic number, because the mean of its divisors is an integer number (42523750).

Almost surely, 2^85047499 is an apocalyptic number.

85047499 is a deficient number, since it is larger than the sum of its proper divisors (1).

85047499 is an equidigital number, since it uses as much as digits as its factorization.

85047499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 85047499 is about 9222.1200924733. The cubic root of 85047499 is about 439.7648519699.

The spelling of 85047499 in words is "eighty-five million, forty-seven thousand, four hundred ninety-nine".