899942 has 4 divisors (see below), whose sum is σ = 1349916. Its totient is φ = 449970.

The previous prime is 899939. The next prime is 899971. The reversal of 899942 is 249998.

It is a semiprime because it is the product of two primes.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 899942.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224984 + ... + 224987.

It is an arithmetic number, because the mean of its divisors is an integer number (337479).

2⁸⁹⁹⁹⁴² is an apocalyptic number.

899942 is a deficient number, since it is larger than the sum of its proper divisors (449974).

899942 is a wasteful number, since it uses less digits than its factorization.

899942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449973.

The product of its digits is 46656, while the sum is 41.

The square root of 899942 is about 948.6527288740. The cubic root of 899942 is about 96.5468644018.

The spelling of 899942 in words is "eight hundred ninety-nine thousand, nine hundred forty-two".