9840394 has 4 divisors (see below), whose sum is σ = 14760594. Its totient is φ = 4920196.

The previous prime is 9840373. The next prime is 9840401. The reversal of 9840394 is 4930489.

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

It can be written as a sum of positive squares in only one way, i.e., 6436369 + 3404025 = 2537^2 + 1845^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2460097 + ... + 2460100.

Almost surely, 2^9840394 is an apocalyptic number.

9840394 is a deficient number, since it is larger than the sum of its proper divisors (4920200).

9840394 is a wasteful number, since it uses less digits than its factorization.

9840394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4920199.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 9840394 is about 3136.9402289492. The cubic root of 9840394 is about 214.2911139803.

The spelling of 9840394 in words is "nine million, eight hundred forty thousand, three hundred ninety-four".