84849865 has 8 divisors (see below), whose sum is σ = 102469320. Its totient is φ = 67446912.

The previous prime is 84849803. The next prime is 84849889. The reversal of 84849865 is 56894848.

It can be written as a sum of positive squares in 4 ways, for example, as 5212089 + 79637776 = 2283^2 + 8924^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84849865 - 2¹⁷ = 84718793 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 53260 + ... + 54829.

It is an arithmetic number, because the mean of its divisors is an integer number (12808665).

Almost surely, 2^84849865 is an apocalyptic number.

It is an amenable number.

84849865 is a deficient number, since it is larger than the sum of its proper divisors (17619455).

84849865 is a wasteful number, since it uses less digits than its factorization.

84849865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108251.

The product of its digits is 2211840, while the sum is 52.

The square root of 84849865 is about 9211.3986451570. The cubic root of 84849865 is about 439.4239448398.

The spelling of 84849865 in words is "eighty-four million, eight hundred forty-nine thousand, eight hundred sixty-five".