899870385 has 16 divisors (see below), whose sum is σ = 1446085440. Its totient is φ = 477833280.

The previous prime is 899870347. The next prime is 899870393. The reversal of 899870385 is 583078998.

It is not a de Polignac number, because 899870385 - 2¹¹ = 899868337 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127551 + ... + 134420.

It is an arithmetic number, because the mean of its divisors is an integer number (90380340).

Almost surely, 2^899870385 is an apocalyptic number.

It is an amenable number.

899870385 is a deficient number, since it is larger than the sum of its proper divisors (546215055).

899870385 is a wasteful number, since it uses less digits than its factorization.

899870385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262208.

The product of its (nonzero) digits is 4354560, while the sum is 57.

The square root of 899870385 is about 29997.8396722164. The cubic root of 899870385 is about 965.4430335262.

The spelling of 899870385 in words is "eight hundred ninety-nine million, eight hundred seventy thousand, three hundred eighty-five".