3999793 has 4 divisors (see below), whose sum is σ = 4571200. Its totient is φ = 3428388.

The previous prime is 3999791. The next prime is 3999803. The reversal of 3999793 is 3979993.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3979993 = 41 ⋅97073.

It is a cyclic number.

It is not a de Polignac number, because 3999793 - 2¹ = 3999791 is a prime.

It is a Duffinian number.

3999793 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3999791) 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, 285693 + ... + 285706.

It is an arithmetic number, because the mean of its divisors is an integer number (1142800).

Almost surely, 2^3999793 is an apocalyptic number.

It is an amenable number.

3999793 is a deficient number, since it is larger than the sum of its proper divisors (571407).

3999793 is an equidigital number, since it uses as much as digits as its factorization.

3999793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571406.

The product of its digits is 413343, while the sum is 49.

The square root of 3999793 is about 1999.9482493305. The cubic root of 3999793 is about 158.7373668828.

The spelling of 3999793 in words is "three million, nine hundred ninety-nine thousand, seven hundred ninety-three".