899838 has 12 divisors (see below), whose sum is σ = 1949688. Its totient is φ = 299940.

The previous prime is 899831. The next prime is 899849. The reversal of 899838 is 838998.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 899793 and 899802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24978 + ... + 25013.

It is an arithmetic number, because the mean of its divisors is an integer number (162474).

2⁸⁹⁹⁸³⁸ is an apocalyptic number.

899838 is an abundant number, since it is smaller than the sum of its proper divisors (1049850).

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

899838 is a wasteful number, since it uses less digits than its factorization.

899838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49999 (or 49996 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 899838 is about 948.5979127112. The cubic root of 899838 is about 96.5431451766.

The spelling of 899838 in words is "eight hundred ninety-nine thousand, eight hundred thirty-eight".