438914647 has 6 divisors (see below), whose sum is σ = 453530904. Its totient is φ = 424755180.

The previous prime is 438914591. The next prime is 438914699. The reversal of 438914647 is 746419834.

It is not a de Polignac number, because 438914647 - 2¹¹ = 438912599 is a prime.

It is a super-2 number, since 2×438914647² = 385292134702269218, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 438914597 and 438914606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438314647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 227403 + ... + 229324.

It is an arithmetic number, because the mean of its divisors is an integer number (75588484).

Almost surely, 2^438914647 is an apocalyptic number.

438914647 is a deficient number, since it is larger than the sum of its proper divisors (14616257).

438914647 is an equidigital number, since it uses as much as digits as its factorization.

438914647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456789 (or 456758 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 438914647 is about 20950.2899025288. The cubic root of 438914647 is about 759.9645914944.

The spelling of 438914647 in words is "four hundred thirty-eight million, nine hundred fourteen thousand, six hundred forty-seven".