999022 has 8 divisors (see below), whose sum is σ = 1586736. Its totient is φ = 470112.

The previous prime is 999007. The next prime is 999023. The reversal of 999022 is 220999.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999023) by changing a digit.

999022 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 3 ways as a sum of consecutive naturals, for example, 14658 + ... + 14725.

It is an arithmetic number, because the mean of its divisors is an integer number (198342).

2⁹⁹⁹⁰²² is an apocalyptic number.

999022 is a deficient number, since it is larger than the sum of its proper divisors (587714).

999022 is a wasteful number, since it uses less digits than its factorization.

999022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29402.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 999022 is about 999.5108803810. The cubic root of 999022 is about 99.9673893666.

Subtracting from 999022 its sum of digits (31), we obtain a triangular number (998991 = T₁₄₁₃).

It can be divided in two parts, 9 and 99022, that multiplied together give a palindrome (891198).

The spelling of 999022 in words is "nine hundred ninety-nine thousand, twenty-two".