4039393 has 4 divisors (see below), whose sum is σ = 4169728. Its totient is φ = 3909060.

The previous prime is 4039391. The next prime is 4039397. The reversal of 4039393 is 3939304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4039393 - 2¹ = 4039391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 130303 = 4039393 / (4 + 0 + 3 + 9 + 3 + 9 + 3).

It is a Duffinian number.

4039393 is a modest number, since divided by 9393 gives 403 as remainder.

It is not an unprimeable number, because it can be changed into a prime (4039391) 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, 65121 + ... + 65182.

It is an arithmetic number, because the mean of its divisors is an integer number (1042432).

Almost surely, 2^4039393 is an apocalyptic number.

It is an amenable number.

4039393 is a deficient number, since it is larger than the sum of its proper divisors (130335).

4039393 is a wasteful number, since it uses less digits than its factorization.

4039393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130334.

The product of its (nonzero) digits is 8748, while the sum is 31.

The square root of 4039393 is about 2009.8241216584. The cubic root of 4039393 is about 159.2595079211.

The spelling of 4039393 in words is "four million, thirty-nine thousand, three hundred ninety-three".