899404873 has 8 divisors (see below), whose sum is σ = 955753992. Its totient is φ = 843438336.

The previous prime is 899404867. The next prime is 899404943. The reversal of 899404873 is 378404998.

It can be written as a sum of positive squares in 4 ways, for example, as 132779529 + 766625344 = 11523^2 + 27688^2 .

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 899404873 - 2⁵ = 899404841 is a prime.

It is a super-2 number, since 2×899404873² = 1617858251152292258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 899404873.

It is not an unprimeable number, because it can be changed into a prime (899404573) 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, 90790 + ... + 100207.

It is an arithmetic number, because the mean of its divisors is an integer number (119469249).

Almost surely, 2^899404873 is an apocalyptic number.

It is an amenable number.

899404873 is a deficient number, since it is larger than the sum of its proper divisors (56349119).

899404873 is a wasteful number, since it uses less digits than its factorization.

899404873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191291.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 899404873 is about 29990.0795764199. The cubic root of 899404873 is about 965.2765270142.

The spelling of 899404873 in words is "eight hundred ninety-nine million, four hundred four thousand, eight hundred seventy-three".