899229 has 4 divisors (see below), whose sum is σ = 1198976. Its totient is φ = 599484.

The previous prime is 899221. The next prime is 899233. The reversal of 899229 is 922998.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 899229 - 2³ = 899221 is a prime.

It is a super-2 number, since 2×899229² = 1617225588882, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 899229.

It is not an unprimeable number, because it can be changed into a prime (899221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149869 + ... + 149874.

It is an arithmetic number, because the mean of its divisors is an integer number (299744).

2⁸⁹⁹²²⁹ is an apocalyptic number.

It is an amenable number.

899229 is a deficient number, since it is larger than the sum of its proper divisors (299747).

899229 is a wasteful number, since it uses less digits than its factorization.

899229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299746.

The product of its digits is 23328, while the sum is 39.

The square root of 899229 is about 948.2768583067. The cubic root of 899229 is about 96.5213604983.

It can be divided in two parts, 899 and 229, that added together give a triangular number (1128 = T₄₇).

The spelling of 899229 in words is "eight hundred ninety-nine thousand, two hundred twenty-nine".