4093939 has 4 divisors (see below), whose sum is σ = 4204624. Its totient is φ = 3983256.

The previous prime is 4093937. The next prime is 4093961. The reversal of 4093939 is 9393904.

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 4093939 - 2¹ = 4093937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 110647 = 4093939 / (4 + 0 + 9 + 3 + 9 + 3 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4093898 and 4093907.

It is not an unprimeable number, because it can be changed into a prime (4093933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55287 + ... + 55360.

It is an arithmetic number, because the mean of its divisors is an integer number (1051156).

Almost surely, 2^4093939 is an apocalyptic number.

4093939 is a deficient number, since it is larger than the sum of its proper divisors (110685).

4093939 is a wasteful number, since it uses less digits than its factorization.

4093939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110684.

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

The square root of 4093939 is about 2023.3484623267. The cubic root of 4093939 is about 159.9731595602.

The spelling of 4093939 in words is "four million, ninety-three thousand, nine hundred thirty-nine".