999954 has 24 divisors (see below), whose sum is σ = 2199132. Its totient is φ = 328320.

The previous prime is 999953. The next prime is 999959. The reversal of 999954 is 459999.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 893025 + 106929 = 945^2 + 327^2 .

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 934 + ... + 1694.

2⁹⁹⁹⁹⁵⁴ is an apocalyptic number.

999954 is an abundant number, since it is smaller than the sum of its proper divisors (1199178).

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

999954 is a wasteful number, since it uses less digits than its factorization.

999954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 839 counting only the distinct ones).

The product of its digits is 131220, while the sum is 45.

The square root of 999954 is about 999.9769997355. The cubic root of 999954 is about 99.9984666432.

Adding to 999954 its sum of digits (45), we get a palindrome (999999).

It can be divided in two parts, 99995 and 4, that added together give a palindrome (99999).

The spelling of 999954 in words is "nine hundred ninety-nine thousand, nine hundred fifty-four".