899742 has 16 divisors (see below), whose sum is σ = 1905552. Its totient is φ = 282240.

The previous prime is 899719. The next prime is 899749. The reversal of 899742 is 247998.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 899742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899749) by changing a digit.

899742 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 7 ways as a sum of consecutive naturals, for example, 4309 + ... + 4512.

It is an arithmetic number, because the mean of its divisors is an integer number (119097).

2⁸⁹⁹⁷⁴² is an apocalyptic number.

899742 is an abundant number, since it is smaller than the sum of its proper divisors (1005810).

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

899742 is a wasteful number, since it uses less digits than its factorization.

899742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8843.

The product of its digits is 36288, while the sum is 39.

The square root of 899742 is about 948.5473103646. The cubic root of 899742 is about 96.5397117914.

The spelling of 899742 in words is "eight hundred ninety-nine thousand, seven hundred forty-two".