438134929 has 6 divisors (see below), whose sum is σ = 453764870. Its totient is φ = 423026016.

The previous prime is 438134923. The next prime is 438134951. The reversal of 438134929 is 929431834.

It can be written as a sum of positive squares in 3 ways, for example, as 15421329 + 422713600 = 3927^2 + 20560^2 .

It is a de Polignac number, because none of the positive numbers 2^k-438134929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438134923) 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 5 ways as a sum of consecutive naturals, for example, 259644 + ... + 261325.

Almost surely, 2^438134929 is an apocalyptic number.

It is an amenable number.

438134929 is a deficient number, since it is larger than the sum of its proper divisors (15629941).

438134929 is an equidigital number, since it uses as much as digits as its factorization.

438134929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521027 (or 520998 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 438134929 is about 20931.6728667348. The cubic root of 438134929 is about 759.5143070568.

The spelling of 438134929 in words is "four hundred thirty-eight million, one hundred thirty-four thousand, nine hundred twenty-nine".