8438946999 has 16 divisors (see below), whose sum is σ = 13615780608. Its totient is φ = 4538593152.

The previous prime is 8438946953. The next prime is 8438947001. The reversal of 8438946999 is 9996498348.

It is not a de Polignac number, because 8438946999 - 2¹¹ = 8438944951 is a prime.

It is a super-2 number, since 2×8438946999² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8438946499) 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 15 ways as a sum of consecutive naturals, for example, 11818897 + ... + 11819610.

It is an arithmetic number, because the mean of its divisors is an integer number (850986288).

Almost surely, 2^8438946999 is an apocalyptic number.

8438946999 is a deficient number, since it is larger than the sum of its proper divisors (5176833609).

8438946999 is a wasteful number, since it uses less digits than its factorization.

8438946999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23638534.

The product of its digits is 120932352, while the sum is 69.

The square root of 8438946999 is about 91863.7414816096. The cubic root of 8438946999 is about 2035.9295838556.

The spelling of 8438946999 in words is "eight billion, four hundred thirty-eight million, nine hundred forty-six thousand, nine hundred ninety-nine".