7338639 has 16 divisors (see below), whose sum is σ = 12199680. Its totient is φ = 3812160.

The previous prime is 7338629. The next prime is 7338641. The reversal of 7338639 is 9368337.

It is not a de Polignac number, because 7338639 - 2⁴ = 7338623 is a prime.

It is a super-4 number, since 4×7338639⁴ (a number of 29 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

7338639 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7338597 and 7338606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7338619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15654 + ... + 16115.

It is an arithmetic number, because the mean of its divisors is an integer number (762480).

Almost surely, 2^7338639 is an apocalyptic number.

7338639 is a deficient number, since it is larger than the sum of its proper divisors (4861041).

7338639 is a wasteful number, since it uses less digits than its factorization.

7338639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31790.

The product of its digits is 81648, while the sum is 39.

The square root of 7338639 is about 2708.9922480509. The cubic root of 7338639 is about 194.3293992896.

The spelling of 7338639 in words is "seven million, three hundred thirty-eight thousand, six hundred thirty-nine".