899078993 has 16 divisors (see below), whose sum is σ = 1004313600. Its totient is φ = 800894160.

The previous prime is 899078989. The next prime is 899079007. The reversal of 899078993 is 399870998.

It is a cyclic number.

It is not a de Polignac number, because 899078993 - 2² = 899078989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (899078903) 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 15 ways as a sum of consecutive naturals, for example, 8348 + ... + 43218.

It is an arithmetic number, because the mean of its divisors is an integer number (62769600).

Almost surely, 2^899078993 is an apocalyptic number.

It is an amenable number.

899078993 is a deficient number, since it is larger than the sum of its proper divisors (105234607).

899078993 is a wasteful number, since it uses less digits than its factorization.

899078993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34972.

The product of its (nonzero) digits is 8817984, while the sum is 62.

The square root of 899078993 is about 29984.6459542213. The cubic root of 899078993 is about 965.1599305389.

The spelling of 899078993 in words is "eight hundred ninety-nine million, seventy-eight thousand, nine hundred ninety-three".