438049647 has 16 divisors (see below), whose sum is σ = 741671680. Its totient is φ = 250313976.

The previous prime is 438049631. The next prime is 438049649. The reversal of 438049647 is 746940834.

438049647 is a `hidden beast` number, since 43 + 80 + 496 + 47 = 666.

It is not a de Polignac number, because 438049647 - 2⁴ = 438049631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438049649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1158673 + ... + 1159050.

It is an arithmetic number, because the mean of its divisors is an integer number (46354480).

Almost surely, 2^438049647 is an apocalyptic number.

438049647 is a deficient number, since it is larger than the sum of its proper divisors (303622033).

438049647 is a wasteful number, since it uses less digits than its factorization.

438049647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317739 (or 2317733 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 438049647 is about 20929.6356155572. The cubic root of 438049647 is about 759.4650245961.

The spelling of 438049647 in words is "four hundred thirty-eight million, forty-nine thousand, six hundred forty-seven".