999948291 has 8 divisors (see below), whose sum is σ = 1333522704. Its totient is φ = 666503040.

The previous prime is 999948289. The next prime is 999948317. The reversal of 999948291 is 192849999.

It is a happy number.

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

It is not a de Polignac number, because 999948291 - 2¹ = 999948289 is a prime.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12490 + ... + 46431.

It is an arithmetic number, because the mean of its divisors is an integer number (166690338).

Almost surely, 2^999948291 is an apocalyptic number.

999948291 is a deficient number, since it is larger than the sum of its proper divisors (333574413).

999948291 is a wasteful number, since it uses less digits than its factorization.

999948291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64581.

The product of its digits is 3779136, while the sum is 60.

The square root of 999948291 is about 31621.9590000367. The cubic root of 999948291 is about 999.9827633696.

The spelling of 999948291 in words is "nine hundred ninety-nine million, nine hundred forty-eight thousand, two hundred ninety-one".