999469 has 4 divisors (see below), whose sum is σ = 1006240. Its totient is φ = 992700.

The previous prime is 999451. The next prime is 999491. The reversal of 999469 is 964999.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 999469 - 2⁵ = 999437 is a prime.

It is a super-2 number, since 2×999469² = 1997876563922, which contains 22 as substring.

It is a Duffinian number.

999469 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999499) 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, 3159 + ... + 3460.

It is an arithmetic number, because the mean of its divisors is an integer number (251560).

2⁹⁹⁹⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

999469 is a deficient number, since it is larger than the sum of its proper divisors (6771).

999469 is a wasteful number, since it uses less digits than its factorization.

999469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770.

The product of its digits is 157464, while the sum is 46.

The square root of 999469 is about 999.7344647455. The cubic root of 999469 is about 99.9822968662.

The spelling of 999469 in words is "nine hundred ninety-nine thousand, four hundred sixty-nine".