4388738 has 4 divisors (see below), whose sum is σ = 6583110. Its totient is φ = 2194368.

The previous prime is 4388731. The next prime is 4388743. The reversal of 4388738 is 8378834.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8378834 = 2 ⋅4189417.

It can be written as a sum of positive squares in only one way, i.e., 2380849 + 2007889 = 1543^2 + 1417^2 .

It is a super-2 number, since 2×4388738² = 38522042465288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4388695 and 4388704.

It is not an unprimeable number, because it can be changed into a prime (4388731) 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 as a sum of consecutive naturals, namely, 1097183 + ... + 1097186.

Almost surely, 2^4388738 is an apocalyptic number.

4388738 is a deficient number, since it is larger than the sum of its proper divisors (2194372).

4388738 is a wasteful number, since it uses less digits than its factorization.

4388738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194371.

The product of its digits is 129024, while the sum is 41.

The square root of 4388738 is about 2094.9315024602. The cubic root of 4388738 is about 163.7243286680.

The spelling of 4388738 in words is "four million, three hundred eighty-eight thousand, seven hundred thirty-eight".