899616433 has 4 divisors (see below), whose sum is σ = 900900468. Its totient is φ = 898332400.

The previous prime is 899616413. The next prime is 899616461. The reversal of 899616433 is 334616998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 334616998 = 2 ⋅167308499.

It can be written as a sum of positive squares in 2 ways, for example, as 575184289 + 324432144 = 23983^2 + 18012^2 .

It is a cyclic number.

It is not a de Polignac number, because 899616433 - 2⁵ = 899616401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (899616413) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 640966 + ... + 642367.

It is an arithmetic number, because the mean of its divisors is an integer number (225225117).

Almost surely, 2^899616433 is an apocalyptic number.

It is an amenable number.

899616433 is a deficient number, since it is larger than the sum of its proper divisors (1284035).

899616433 is a wasteful number, since it uses less digits than its factorization.

899616433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284034.

The product of its digits is 839808, while the sum is 49.

The square root of 899616433 is about 29993.6065353935. The cubic root of 899616433 is about 965.3522059060.

The spelling of 899616433 in words is "eight hundred ninety-nine million, six hundred sixteen thousand, four hundred thirty-three".