9138458 has 8 divisors (see below), whose sum is σ = 15665952. Its totient is φ = 3916476.

The previous prime is 9138443. The next prime is 9138463. The reversal of 9138458 is 8548319.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×9138458² = 167022829235528, which contains 22 as substring.

It is an Ulam 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, 326360 + ... + 326387.

It is an arithmetic number, because the mean of its divisors is an integer number (1958244).

Almost surely, 2^9138458 is an apocalyptic number.

9138458 is a deficient number, since it is larger than the sum of its proper divisors (6527494).

9138458 is a wasteful number, since it uses less digits than its factorization.

9138458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652756.

The product of its digits is 34560, while the sum is 38.

The square root of 9138458 is about 3022.9882566758. The cubic root of 9138458 is about 209.0696409484.

The spelling of 9138458 in words is "nine million, one hundred thirty-eight thousand, four hundred fifty-eight".