899915299879 has 4 divisors (see below), whose sum is σ = 899944145920. Its totient is φ = 899886453840.

The previous prime is 899915299867. The next prime is 899915299901. The reversal of 899915299879 is 978992519998.

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

It is a cyclic number.

It is not a de Polignac number, because 899915299879 - 2¹³ = 899915291687 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 899915299796 and 899915299805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899915299859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14376174 + ... + 14438635.

It is an arithmetic number, because the mean of its divisors is an integer number (224986036480).

Almost surely, 2^899915299879 is an apocalyptic number.

899915299879 is a deficient number, since it is larger than the sum of its proper divisors (28846041).

899915299879 is a wasteful number, since it uses less digits than its factorization.

899915299879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28846040.

The product of its digits is 2380855680, while the sum is 85.

The spelling of 899915299879 in words is "eight hundred ninety-nine billion, nine hundred fifteen million, two hundred ninety-nine thousand, eight hundred seventy-nine".