3993505 has 4 divisors (see below), whose sum is σ = 4792212. Its totient is φ = 3194800.

The previous prime is 3993481. The next prime is 3993511. The reversal of 3993505 is 5053993.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 633616 + 3359889 = 796^2 + 1833^2 .

It is not a de Polignac number, because 3993505 - 2⁷ = 3993377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399346 + ... + 399355.

It is an arithmetic number, because the mean of its divisors is an integer number (1198053).

Almost surely, 2^3993505 is an apocalyptic number.

It is an amenable number.

3993505 is a deficient number, since it is larger than the sum of its proper divisors (798707).

3993505 is an equidigital number, since it uses as much as digits as its factorization.

3993505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798706.

The product of its (nonzero) digits is 18225, while the sum is 34.

The square root of 3993505 is about 1998.3755903233. The cubic root of 3993505 is about 158.6541405697.

The spelling of 3993505 in words is "three million, nine hundred ninety-three thousand, five hundred five".