9381438 has 24 divisors (see below), whose sum is σ = 22174776. Its totient is φ = 2842800.

The previous prime is 9381431. The next prime is 9381503. The reversal of 9381438 is 8341839.

It is a super-2 number, since 2×9381438² = 176022757895688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9381431) by changing a digit.

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, 23493 + ... + 23888.

It is an arithmetic number, because the mean of its divisors is an integer number (923949).

Almost surely, 2^9381438 is an apocalyptic number.

9381438 is an abundant number, since it is smaller than the sum of its proper divisors (12793338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9381438 is a wasteful number, since it uses less digits than its factorization.

9381438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47400 (or 47397 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 9381438 is about 3062.9133190477. The cubic root of 9381438 is about 210.9064221210.

The spelling of 9381438 in words is "nine million, three hundred eighty-one thousand, four hundred thirty-eight".