438247663 has 8 divisors (see below), whose sum is σ = 504799232. Its totient is φ = 372682296.

The previous prime is 438247661. The next prime is 438247697. The reversal of 438247663 is 366742834.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 438247663 - 2¹ = 438247661 is a prime.

It is a super-2 number, since 2×438247663² = 384122028249923138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438247661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245595 + ... + 247372.

It is an arithmetic number, because the mean of its divisors is an integer number (63099904).

Almost surely, 2^438247663 is an apocalyptic number.

438247663 is a deficient number, since it is larger than the sum of its proper divisors (66551569).

438247663 is a wasteful number, since it uses less digits than its factorization.

438247663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493101.

The product of its digits is 580608, while the sum is 43.

The square root of 438247663 is about 20934.3655982215. The cubic root of 438247663 is about 759.5794435688.

The spelling of 438247663 in words is "four hundred thirty-eight million, two hundred forty-seven thousand, six hundred sixty-three".