9243139 has 4 divisors (see below), whose sum is σ = 9729640. Its totient is φ = 8756640.

The previous prime is 9243133. The next prime is 9243167. The reversal of 9243139 is 9313429.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9243139 - 2³ = 9243131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9243139.

It is not an unprimeable number, because it can be changed into a prime (9243131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243222 + ... + 243259.

It is an arithmetic number, because the mean of its divisors is an integer number (2432410).

Almost surely, 2^9243139 is an apocalyptic number.

9243139 is a deficient number, since it is larger than the sum of its proper divisors (486501).

9243139 is a wasteful number, since it uses less digits than its factorization.

9243139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486500.

The product of its digits is 5832, while the sum is 31.

The square root of 9243139 is about 3040.2531144627. The cubic root of 9243139 is about 209.8649093370.

It can be divided in two parts, 924 and 3139, that multiplied together give a triangular number (2900436 = T₂₄₀₈).

The spelling of 9243139 in words is "nine million, two hundred forty-three thousand, one hundred thirty-nine".