85912249 has 2 divisors, whose sum is σ = 85912250. Its totient is φ = 85912248.

The previous prime is 85912241. The next prime is 85912279. The reversal of 85912249 is 94221958.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84548025 + 1364224 = 9195^2 + 1168^2 .

It is a cyclic number.

It is not a de Polignac number, because 85912249 - 2³ = 85912241 is a prime.

It is not a weakly prime, because it can be changed into another prime (85912241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42956124 + 42956125.

It is an arithmetic number, because the mean of its divisors is an integer number (42956125).

Almost surely, 2^85912249 is an apocalyptic number.

It is an amenable number.

85912249 is a deficient number, since it is larger than the sum of its proper divisors (1).

85912249 is an equidigital number, since it uses as much as digits as its factorization.

85912249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 40.

The square root of 85912249 is about 9268.8860711522. The cubic root of 85912249 is about 441.2503159481.

The spelling of 85912249 in words is "eighty-five million, nine hundred twelve thousand, two hundred forty-nine".