899315447 has 4 divisors (see below), whose sum is σ = 900363240. Its totient is φ = 898267656.

The previous prime is 899315411. The next prime is 899315449. The reversal of 899315447 is 744513998.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-899315447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 899315395 and 899315404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899315449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522608 + ... + 524325.

It is an arithmetic number, because the mean of its divisors is an integer number (225090810).

Almost surely, 2^899315447 is an apocalyptic number.

899315447 is a deficient number, since it is larger than the sum of its proper divisors (1047793).

899315447 is a wasteful number, since it uses less digits than its factorization.

899315447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047792.

The product of its digits is 1088640, while the sum is 50.

The square root of 899315447 is about 29988.5886130041. The cubic root of 899315447 is about 965.2445341256.

The spelling of 899315447 in words is "eight hundred ninety-nine million, three hundred fifteen thousand, four hundred forty-seven".