4647438 has 48 divisors (see below), whose sum is σ = 10782720. Its totient is φ = 1442448.

The previous prime is 4647437. The next prime is 4647439. The reversal of 4647438 is 8347464.

4647438 is a `hidden beast` number, since 4 + 647 + 4 + 3 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (4647437) and next prime (4647439).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4647431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36531 + ... + 36657.

It is an arithmetic number, because the mean of its divisors is an integer number (224640).

Almost surely, 2^4647438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4647438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5391360).

4647438 is an abundant number, since it is smaller than the sum of its proper divisors (6135282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4647438 is a wasteful number, since it uses less digits than its factorization.

4647438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 258 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 4647438 is about 2155.7917339112. The cubic root of 4647438 is about 166.8800936879.

The spelling of 4647438 in words is "four million, six hundred forty-seven thousand, four hundred thirty-eight".