899722 has 8 divisors (see below), whose sum is σ = 1354500. Its totient is φ = 448224.

The previous prime is 899719. The next prime is 899749. The reversal of 899722 is 227998.

It can be written as a sum of positive squares in 2 ways, for example, as 826281 + 73441 = 909^2 + 271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54 + ... + 1342.

2⁸⁹⁹⁷²² is an apocalyptic number.

899722 is a deficient number, since it is larger than the sum of its proper divisors (454778).

899722 is a wasteful number, since it uses less digits than its factorization.

899722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640.

The product of its digits is 18144, while the sum is 37.

The square root of 899722 is about 948.5367678693. The cubic root of 899722 is about 96.5389964721.

The spelling of 899722 in words is "eight hundred ninety-nine thousand, seven hundred twenty-two".