9281438 has 4 divisors (see below), whose sum is σ = 13922160. Its totient is φ = 4640718.

The previous prime is 9281423. The next prime is 9281449. The reversal of 9281438 is 8341829.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8341829 = 53 ⋅157393.

It is a super-2 number, since 2×9281438² = 172290182695688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9281398 and 9281407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2320358 + ... + 2320361.

It is an arithmetic number, because the mean of its divisors is an integer number (3480540).

Almost surely, 2^9281438 is an apocalyptic number.

9281438 is a deficient number, since it is larger than the sum of its proper divisors (4640722).

9281438 is a wasteful number, since it uses less digits than its factorization.

9281438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4640721.

The product of its digits is 13824, while the sum is 35.

The square root of 9281438 is about 3046.5452565160. The cubic root of 9281438 is about 210.1543687347.

The spelling of 9281438 in words is "nine million, two hundred eighty-one thousand, four hundred thirty-eight".