85814947 has 2 divisors, whose sum is σ = 85814948. Its totient is φ = 85814946.

The previous prime is 85814923. The next prime is 85814977. The reversal of 85814947 is 74941858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85814947 - 2¹⁹ = 85290659 is a prime.

It is a super-2 number, since 2×85814947² = 14728410257225618, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 85814897 and 85814906.

It is not a weakly prime, because it can be changed into another prime (85814977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42907473 + 42907474.

It is an arithmetic number, because the mean of its divisors is an integer number (42907474).

Almost surely, 2^85814947 is an apocalyptic number.

85814947 is a deficient number, since it is larger than the sum of its proper divisors (1).

85814947 is an equidigital number, since it uses as much as digits as its factorization.

85814947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 46.

The square root of 85814947 is about 9263.6357333393. The cubic root of 85814947 is about 441.0836701057.

The spelling of 85814947 in words is "eighty-five million, eight hundred fourteen thousand, nine hundred forty-seven".