85429649 has 4 divisors (see below), whose sum is σ = 85923636. Its totient is φ = 84935664.

The previous prime is 85429579. The next prime is 85429651. The reversal of 85429649 is 94692458.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55234624 + 30195025 = 7432^2 + 5495^2 .

It is a cyclic number.

It is not a de Polignac number, because 85429649 - 2²⁴ = 68652433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85429049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246734 + ... + 247079.

It is an arithmetic number, because the mean of its divisors is an integer number (21480909).

Almost surely, 2^85429649 is an apocalyptic number.

It is an amenable number.

85429649 is a deficient number, since it is larger than the sum of its proper divisors (493987).

85429649 is a wasteful number, since it uses less digits than its factorization.

85429649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493986.

The product of its digits is 622080, while the sum is 47.

The square root of 85429649 is about 9242.8160752013. The cubic root of 85429649 is about 440.4225434708.

It can be divided in two parts, 854 and 29649, that added together give a palindrome (30503).

The spelling of 85429649 in words is "eighty-five million, four hundred twenty-nine thousand, six hundred forty-nine".