438543117 has 12 divisors (see below), whose sum is σ = 633700704. Its totient is φ = 292246920.

The previous prime is 438543037. The next prime is 438543137. The reversal of 438543117 is 711345834.

It is a happy number.

It is not a de Polignac number, because 438543117 - 2⁷ = 438542989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438543137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19008 + ... + 35190.

It is an arithmetic number, because the mean of its divisors is an integer number (52808392).

Almost surely, 2^438543117 is an apocalyptic number.

It is an amenable number.

438543117 is a deficient number, since it is larger than the sum of its proper divisors (195157587).

438543117 is a wasteful number, since it uses less digits than its factorization.

438543117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19200 (or 19197 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 438543117 is about 20941.4210835846. The cubic root of 438543117 is about 759.7501007794.

It can be divided in two parts, 43854 and 3117, that added together give a triangular number (46971 = T₃₀₆).

The spelling of 438543117 in words is "four hundred thirty-eight million, five hundred forty-three thousand, one hundred seventeen".