999948 has 24 divisors (see below), whose sum is σ = 2435328. Its totient is φ = 318736.

The previous prime is 999931. The next prime is 999953. The reversal of 999948 is 849999.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 999897 and 999906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1536 + ... + 2087.

It is an arithmetic number, because the mean of its divisors is an integer number (101472).

2⁹⁹⁹⁹⁴⁸ is an apocalyptic number.

It is an amenable number.

999948 is an abundant number, since it is smaller than the sum of its proper divisors (1435380).

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

999948 is a wasteful number, since it uses less digits than its factorization.

999948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3653 (or 3651 counting only the distinct ones).

The product of its digits is 209952, while the sum is 48.

The square root of 999948 is about 999.9739996620. The cubic root of 999948 is about 99.9982666366.

The spelling of 999948 in words is "nine hundred ninety-nine thousand, nine hundred forty-eight".