899661834 has 24 divisors (see below), whose sum is σ = 1958017152. Its totient is φ = 298541160.

The previous prime is 899661823. The next prime is 899661857. The reversal of 899661834 is 438166998.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108052 + ... + 116079.

It is an arithmetic number, because the mean of its divisors is an integer number (81584048).

Almost surely, 2^899661834 is an apocalyptic number.

899661834 is an abundant number, since it is smaller than the sum of its proper divisors (1058355318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

899661834 is a wasteful number, since it uses less digits than its factorization.

899661834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224362 (or 224359 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 899661834 is about 29994.3633704735. The cubic root of 899661834 is about 965.3684451300.

The spelling of 899661834 in words is "eight hundred ninety-nine million, six hundred sixty-one thousand, eight hundred thirty-four".