9403939 has 4 divisors (see below), whose sum is σ = 9424800. Its totient is φ = 9383080.

The previous prime is 9403921. The next prime is 9403963. The reversal of 9403939 is 9393049.

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 9403939 - 2⁷ = 9403811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9403898 and 9403907.

It is not an unprimeable number, because it can be changed into a prime (9403139) 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, 9739 + ... + 10660.

It is an arithmetic number, because the mean of its divisors is an integer number (2356200).

Almost surely, 2^9403939 is an apocalyptic number.

9403939 is a deficient number, since it is larger than the sum of its proper divisors (20861).

9403939 is a wasteful number, since it uses less digits than its factorization.

9403939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20860.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 9403939 is about 3066.5842561391. The cubic root of 9403939 is about 211.0749043375.

The spelling of 9403939 in words is "nine million, four hundred three thousand, nine hundred thirty-nine".