9038638 has 24 divisors (see below), whose sum is σ = 15903000. Its totient is φ = 3841488.

The previous prime is 9038629. The next prime is 9038657. The reversal of 9038638 is 8368309.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9038597 and 9038606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14293 + ... + 14911.

It is an arithmetic number, because the mean of its divisors is an integer number (662625).

Almost surely, 2^9038638 is an apocalyptic number.

9038638 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

9038638 is a deficient number, since it is larger than the sum of its proper divisors (6864362).

9038638 is a wasteful number, since it uses less digits than its factorization.

9038638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784 (or 777 counting only the distinct ones).

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

The square root of 9038638 is about 3006.4327699119. The cubic root of 9038638 is about 208.3056250439.

The spelling of 9038638 in words is "nine million, thirty-eight thousand, six hundred thirty-eight".