3993717 has 16 divisors (see below), whose sum is σ = 6554240. Its totient is φ = 2106432.

The previous prime is 3993713. The next prime is 3993721. The reversal of 3993717 is 7173993.

It is an interprime number because it is at equal distance from previous prime (3993713) and next prime (3993721).

It is not a de Polignac number, because 3993717 - 2² = 3993713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

3993717 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7042 + ... + 7587.

It is an arithmetic number, because the mean of its divisors is an integer number (409640).

Almost surely, 2^3993717 is an apocalyptic number.

It is an amenable number.

3993717 is a deficient number, since it is larger than the sum of its proper divisors (2560523).

3993717 is a wasteful number, since it uses less digits than its factorization.

3993717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14652.

The product of its digits is 35721, while the sum is 39.

The square root of 3993717 is about 1998.4286327012. The cubic root of 3993717 is about 158.6569479685.

The spelling of 3993717 in words is "three million, nine hundred ninety-three thousand, seven hundred seventeen".