85499423 has 2 divisors, whose sum is σ = 85499424. Its totient is φ = 85499422.

The previous prime is 85499419. The next prime is 85499461. The reversal of 85499423 is 32499458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85499423 - 2² = 85499419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85499483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42749711 + 42749712.

It is an arithmetic number, because the mean of its divisors is an integer number (42749712).

Almost surely, 2^85499423 is an apocalyptic number.

85499423 is a deficient number, since it is larger than the sum of its proper divisors (1).

85499423 is an equidigital number, since it uses as much as digits as its factorization.

85499423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 44.

The square root of 85499423 is about 9246.5898038142. The cubic root of 85499423 is about 440.5424147353.

The spelling of 85499423 in words is "eighty-five million, four hundred ninety-nine thousand, four hundred twenty-three".