899639684297 has 8 divisors (see below), whose sum is σ = 904865172744. Its totient is φ = 894414486528.

The previous prime is 899639684267. The next prime is 899639684371. The reversal of 899639684297 is 792486936998.

899639684297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 601584833161 + 298054851136 = 775619^2 + 545944^2 .

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 899639684297 - 2²² = 899635489993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (899639684267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11089193 + ... + 11170025.

It is an arithmetic number, because the mean of its divisors is an integer number (113108146593).

Almost surely, 2^899639684297 is an apocalyptic number.

It is an amenable number.

899639684297 is a deficient number, since it is larger than the sum of its proper divisors (5225488447).

899639684297 is a wasteful number, since it uses less digits than its factorization.

899639684297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145339.

The product of its digits is 2539579392, while the sum is 80.

The spelling of 899639684297 in words is "eight hundred ninety-nine billion, six hundred thirty-nine million, six hundred eighty-four thousand, two hundred ninety-seven".