899424 has 60 divisors (see below), whose sum is σ = 2652804. Its totient is φ = 298944.

The previous prime is 899413. The next prime is 899429. The reversal of 899424 is 424998.

It is a happy number.

899424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899429) by changing a digit.

899424 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2419 + ... + 2765.

2⁸⁹⁹⁴²⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 899424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1326402).

899424 is an abundant number, since it is smaller than the sum of its proper divisors (1753380).

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

899424 is a wasteful number, since it uses less digits than its factorization.

899424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 352 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 899424 is about 948.3796708070. The cubic root of 899424 is about 96.5283369581.

The spelling of 899424 in words is "eight hundred ninety-nine thousand, four hundred twenty-four".