85449649 has 2 divisors, whose sum is σ = 85449650. Its totient is φ = 85449648.

The previous prime is 85449587. The next prime is 85449659. The reversal of 85449649 is 94694458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80640400 + 4809249 = 8980^2 + 2193^2 .

It is a cyclic number.

It is not a de Polignac number, because 85449649 - 2¹³ = 85441457 is a prime.

It is not a weakly prime, because it can be changed into another prime (85449659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42724824 + 42724825.

It is an arithmetic number, because the mean of its divisors is an integer number (42724825).

Almost surely, 2^85449649 is an apocalyptic number.

It is an amenable number.

85449649 is a deficient number, since it is larger than the sum of its proper divisors (1).

85449649 is an equidigital number, since it uses as much as digits as its factorization.

85449649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 49.

The square root of 85449649 is about 9243.8979332314. The cubic root of 85449649 is about 440.4569100077.

The spelling of 85449649 in words is "eighty-five million, four hundred forty-nine thousand, six hundred forty-nine".