999848999 has 4 divisors (see below), whose sum is σ = 1058663664. Its totient is φ = 941034336.

The previous prime is 999848957. The next prime is 999849013.

999848999 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999848999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999848929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29407307 + ... + 29407340.

It is an arithmetic number, because the mean of its divisors is an integer number (264665916).

Almost surely, 2^999848999 is an apocalyptic number.

999848999 is a deficient number, since it is larger than the sum of its proper divisors (58814665).

999848999 is a wasteful number, since it uses less digits than its factorization.

999848999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58814664.

The product of its digits is 136048896, while the sum is 74.

The square root of 999848999 is about 31620.3889761021. The cubic root of 999848999 is about 999.9496637996.

The spelling of 999848999 in words is "nine hundred ninety-nine million, eight hundred forty-eight thousand, nine hundred ninety-nine".