9149223 has 4 divisors (see below), whose sum is σ = 12198968. Its totient is φ = 6099480.

The previous prime is 9149221. The next prime is 9149233. The reversal of 9149223 is 3229419.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3229419 = 3 ⋅1076473.

It is not a de Polignac number, because 9149223 - 2¹ = 9149221 is a prime.

It is a Duffinian number.

9149223 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9149221) 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 3 ways as a sum of consecutive naturals, for example, 1524868 + ... + 1524873.

It is an arithmetic number, because the mean of its divisors is an integer number (3049742).

Almost surely, 2^9149223 is an apocalyptic number.

9149223 is a deficient number, since it is larger than the sum of its proper divisors (3049745).

9149223 is a wasteful number, since it uses less digits than its factorization.

9149223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049744.

The product of its digits is 3888, while the sum is 30.

The square root of 9149223 is about 3024.7682555859. The cubic root of 9149223 is about 209.1517026238.

The spelling of 9149223 in words is "nine million, one hundred forty-nine thousand, two hundred twenty-three".