85894819 has 2 divisors, whose sum is σ = 85894820. Its totient is φ = 85894818.

The previous prime is 85894789. The next prime is 85894859. The reversal of 85894819 is 91849858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85894819 - 2¹¹ = 85892771 is a prime.

It is a super-2 number, since 2×85894819² = 14755839862085522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85894859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42947409 + 42947410.

It is an arithmetic number, because the mean of its divisors is an integer number (42947410).

Almost surely, 2^85894819 is an apocalyptic number.

85894819 is a deficient number, since it is larger than the sum of its proper divisors (1).

85894819 is an equidigital number, since it uses as much as digits as its factorization.

85894819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 52.

The square root of 85894819 is about 9267.9457810240. The cubic root of 85894819 is about 441.2204734313.

The spelling of 85894819 in words is "eighty-five million, eight hundred ninety-four thousand, eight hundred nineteen".