438476913 has 12 divisors (see below), whose sum is σ = 723835008. Its totient is φ = 250558200.

The previous prime is 438476911. The next prime is 438476921. The reversal of 438476913 is 319674834.

It is not a de Polignac number, because 438476913 - 2¹ = 438476911 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (438476911) 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 11 ways as a sum of consecutive naturals, for example, 3479913 + ... + 3480038.

It is an arithmetic number, because the mean of its divisors is an integer number (60319584).

Almost surely, 2^438476913 is an apocalyptic number.

It is an amenable number.

438476913 is a deficient number, since it is larger than the sum of its proper divisors (285358095).

438476913 is a wasteful number, since it uses less digits than its factorization.

438476913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6959964 (or 6959961 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 438476913 is about 20939.8403289041. The cubic root of 438476913 is about 759.7118673461.

The spelling of 438476913 in words is "four hundred thirty-eight million, four hundred seventy-six thousand, nine hundred thirteen".