9006388 has 12 divisors (see below), whose sum is σ = 16145892. Its totient is φ = 4393280.

The previous prime is 9006377. The next prime is 9006391. The reversal of 9006388 is 8836009.

It can be written as a sum of positive squares in 2 ways, for example, as 1542564 + 7463824 = 1242^2 + 2732^2 .

It is a super-2 number, since 2×9006388² = 162230049613088, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 27295 + ... + 27622.

It is an arithmetic number, because the mean of its divisors is an integer number (1345491).

Almost surely, 2^9006388 is an apocalyptic number.

It is an amenable number.

9006388 is a deficient number, since it is larger than the sum of its proper divisors (7139504).

9006388 is a wasteful number, since it uses less digits than its factorization.

9006388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54962 (or 54960 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 9006388 is about 3001.0644778145. The cubic root of 9006388 is about 208.0575839087.

The spelling of 9006388 in words is "nine million, six thousand, three hundred eighty-eight".