85471499 has 2 divisors, whose sum is σ = 85471500. Its totient is φ = 85471498.

The previous prime is 85471483. The next prime is 85471501. The reversal of 85471499 is 99417458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85471499 - 2⁴ = 85471483 is a prime.

It is a Sophie Germain prime.

Together with 85471501, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85470499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42735749 + 42735750.

It is an arithmetic number, because the mean of its divisors is an integer number (42735750).

Almost surely, 2^85471499 is an apocalyptic number.

85471499 is a deficient number, since it is larger than the sum of its proper divisors (1).

85471499 is an equidigital number, since it uses as much as digits as its factorization.

85471499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 85471499 is about 9245.0797184232. The cubic root of 85471499 is about 440.4944493205.

The spelling of 85471499 in words is "eighty-five million, four hundred seventy-one thousand, four hundred ninety-nine".