3993726 has 24 divisors (see below), whose sum is σ = 8781192. Its totient is φ = 1210000.

The previous prime is 3993721. The next prime is 3993733. The reversal of 3993726 is 6273993.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2025 + ... + 3476.

It is an arithmetic number, because the mean of its divisors is an integer number (365883).

Almost surely, 2^3993726 is an apocalyptic number.

3993726 is an abundant number, since it is smaller than the sum of its proper divisors (4787466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3993726 is a wasteful number, since it uses less digits than its factorization.

3993726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5528 (or 5517 counting only the distinct ones).

The product of its digits is 61236, while the sum is 39.

The square root of 3993726 is about 1998.4308844691. The cubic root of 3993726 is about 158.6570671483.

The spelling of 3993726 in words is "three million, nine hundred ninety-three thousand, seven hundred twenty-six".