938638 has 16 divisors (see below), whose sum is σ = 1570320. Its totient is φ = 418176.

The previous prime is 938617. The next prime is 938659. The reversal of 938638 is 836839.

It is a happy number.

938638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (938617) and next prime (938659).

It is a junction number, because it is equal to n+sod(n) for n = 938597 and 938606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81 + ... + 1372.

It is an arithmetic number, because the mean of its divisors is an integer number (98145).

2⁹³⁸⁶³⁸ is an apocalyptic number.

938638 is a deficient number, since it is larger than the sum of its proper divisors (631682).

938638 is a wasteful number, since it uses less digits than its factorization.

938638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491.

The product of its digits is 31104, while the sum is 37.

The square root of 938638 is about 968.8333189976. The cubic root of 938638 is about 97.9112760777.

The spelling of 938638 in words is "nine hundred thirty-eight thousand, six hundred thirty-eight".