438135332 has 12 divisors (see below), whose sum is σ = 769506780. Its totient is φ = 218276256.

The previous prime is 438135331. The next prime is 438135359. The reversal of 438135332 is 233531834.

It can be written as a sum of positive squares in 2 ways, for example, as 135862336 + 302272996 = 11656^2 + 17386^2 .

It is not an unprimeable number, because it can be changed into a prime (438135331) 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 3 ways as a sum of consecutive naturals, for example, 196607 + ... + 198822.

It is an arithmetic number, because the mean of its divisors is an integer number (64125565).

Almost surely, 2^438135332 is an apocalyptic number.

It is an amenable number.

438135332 is a deficient number, since it is larger than the sum of its proper divisors (331371448).

438135332 is a wasteful number, since it uses less digits than its factorization.

438135332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395710 (or 395708 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 438135332 is about 20931.6824932923. The cubic root of 438135332 is about 759.5145399258.

The spelling of 438135332 in words is "four hundred thirty-eight million, one hundred thirty-five thousand, three hundred thirty-two".