899855145 has 24 divisors (see below), whose sum is σ = 1782570816. Its totient is φ = 411362208.

The previous prime is 899855141. The next prime is 899855149. The reversal of 899855145 is 541558998.

899855145 is a `hidden beast` number, since 89 + 9 + 8 + 551 + 4 + 5 = 666.

899855145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (899855141) and next prime (899855149).

It is not a de Polignac number, because 899855145 - 2² = 899855141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 899855091 and 899855100.

It is not an unprimeable number, because it can be changed into a prime (899855141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1428027 + ... + 1428656.

It is an arithmetic number, because the mean of its divisors is an integer number (74273784).

Almost surely, 2^899855145 is an apocalyptic number.

It is an amenable number.

899855145 is a deficient number, since it is larger than the sum of its proper divisors (882715671).

899855145 is a wasteful number, since it uses less digits than its factorization.

899855145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856701 (or 2856698 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 54.

The square root of 899855145 is about 29997.5856528488. The cubic root of 899855145 is about 965.4375833209.

The spelling of 899855145 in words is "eight hundred ninety-nine million, eight hundred fifty-five thousand, one hundred forty-five".