9042394093 has 4 divisors (see below), whose sum is σ = 9043758268. Its totient is φ = 9041029920.

The previous prime is 9042394091. The next prime is 9042394111. The reversal of 9042394093 is 3904932409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3904932409 = 7 ⋅557847487.

It can be written as a sum of positive squares in 2 ways, for example, as 6682572009 + 2359822084 = 81747^2 + 48578^2 .

It is a cyclic number.

It is not a de Polignac number, because 9042394093 - 2¹ = 9042394091 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9042394091) 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, 672096 + ... + 685417.

It is an arithmetic number, because the mean of its divisors is an integer number (2260939567).

Almost surely, 2^9042394093 is an apocalyptic number.

It is an amenable number.

9042394093 is a deficient number, since it is larger than the sum of its proper divisors (1364175).

9042394093 is a wasteful number, since it uses less digits than its factorization.

9042394093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364174.

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 9042394093 is about 95091.5037897708. The cubic root of 9042394093 is about 2083.3447551687.

The spelling of 9042394093 in words is "nine billion, forty-two million, three hundred ninety-four thousand, ninety-three".