438500505 has 32 divisors (see below), whose sum is σ = 724886784. Its totient is φ = 226181376.

The previous prime is 438500479. The next prime is 438500507. The reversal of 438500505 is 505005834.

It is not a de Polignac number, because 438500505 - 2⁶ = 438500441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (438500507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93732 + ... + 98298.

It is an arithmetic number, because the mean of its divisors is an integer number (22652712).

Almost surely, 2^438500505 is an apocalyptic number.

It is an amenable number.

438500505 is a deficient number, since it is larger than the sum of its proper divisors (286386279).

438500505 is a wasteful number, since it uses less digits than its factorization.

438500505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 438500505 is about 20940.4036494047. The cubic root of 438500505 is about 759.7254923895.

The spelling of 438500505 in words is "four hundred thirty-eight million, five hundred thousand, five hundred five".