438485663 has 24 divisors (see below), whose sum is σ = 569416320. Its totient is φ = 333713520.

The previous prime is 438485617. The next prime is 438485681. The reversal of 438485663 is 366584834.

It is not a de Polignac number, because 438485663 - 2⁶ = 438485599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438485603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13718 + ... + 32636.

It is an arithmetic number, because the mean of its divisors is an integer number (23725680).

Almost surely, 2^438485663 is an apocalyptic number.

438485663 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

438485663 is a deficient number, since it is larger than the sum of its proper divisors (130930657).

438485663 is a wasteful number, since it uses less digits than its factorization.

438485663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18987 (or 18980 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 47.

The square root of 438485663 is about 20940.0492597319. The cubic root of 438485663 is about 759.7169207742.

The spelling of 438485663 in words is "four hundred thirty-eight million, four hundred eighty-five thousand, six hundred sixty-three".