438120064 has 16 divisors (see below), whose sum is σ = 872817570. Its totient is φ = 219059968.

The previous prime is 438120049. The next prime is 438120083. The reversal of 438120064 is 460021834.

It can be written as a sum of positive squares in only one way, i.e., 399680064 + 38440000 = 19992^2 + 6200^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1711279 + ... + 1711534.

Almost surely, 2^438120064 is an apocalyptic number.

It is an amenable number.

438120064 is a deficient number, since it is larger than the sum of its proper divisors (434697506).

438120064 is an equidigital number, since it uses as much as digits as its factorization.

438120064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422827 (or 3422815 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 438120064 is about 20931.3177798246. The cubic root of 438120064 is about 759.5057173833.

Adding to 438120064 its reverse (460021834), we get a palindrome (898141898).

The spelling of 438120064 in words is "four hundred thirty-eight million, one hundred twenty thousand, sixty-four".