999948258 has 12 divisors (see below), whose sum is σ = 2166554598. Its totient is φ = 333316080.

The previous prime is 999948251. The next prime is 999948259. The reversal of 999948258 is 852849999.

It can be written as a sum of positive squares in only one way, i.e., 998117649 + 1830609 = 31593^2 + 1353^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 999948195 and 999948204.

It is not an unprimeable number, because it can be changed into a prime (999948251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27776323 + ... + 27776358.

Almost surely, 2^999948258 is an apocalyptic number.

999948258 is an abundant number, since it is smaller than the sum of its proper divisors (1166606340).

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

999948258 is a wasteful number, since it uses less digits than its factorization.

999948258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55552689 (or 55552686 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 63.

The square root of 999948258 is about 31621.9584782474. The cubic root of 999948258 is about 999.9827523692.

The spelling of 999948258 in words is "nine hundred ninety-nine million, nine hundred forty-eight thousand, two hundred fifty-eight".