899170449 has 16 divisors (see below), whose sum is σ = 1213185600. Its totient is φ = 592343360.

The previous prime is 899170423. The next prime is 899170451. The reversal of 899170449 is 944071998.

It is a cyclic number.

It is not a de Polignac number, because 899170449 - 2²⁹ = 362299537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (899170049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82954 + ... + 93164.

It is an arithmetic number, because the mean of its divisors is an integer number (75824100).

Almost surely, 2^899170449 is an apocalyptic number.

It is an amenable number.

899170449 is a deficient number, since it is larger than the sum of its proper divisors (314015151).

899170449 is a wasteful number, since it uses less digits than its factorization.

899170449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10560.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 899170449 is about 29986.1709626288. The cubic root of 899170449 is about 965.1926553882.

The spelling of 899170449 in words is "eight hundred ninety-nine million, one hundred seventy thousand, four hundred forty-nine".