4398438009 has 12 divisors (see below), whose sum is σ = 6822067344. Its totient is φ = 2513393064.

The previous prime is 4398437969. The next prime is 4398438017. The reversal of 4398438009 is 9008348934.

It is not a de Polignac number, because 4398438009 - 2⁸ = 4398437753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4398438029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14960527 + ... + 14960820.

It is an arithmetic number, because the mean of its divisors is an integer number (568505612).

Almost surely, 2^4398438009 is an apocalyptic number.

4398438009 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

4398438009 is a deficient number, since it is larger than the sum of its proper divisors (2423629335).

4398438009 is a wasteful number, since it uses less digits than its factorization.

4398438009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29921364 (or 29921357 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The square root of 4398438009 is about 66320.7208118247. The cubic root of 4398438009 is about 1638.4486133347.

The spelling of 4398438009 in words is "four billion, three hundred ninety-eight million, four hundred thirty-eight thousand, nine".