3996447 has 16 divisors (see below), whose sum is σ = 6558720. Its totient is φ = 2107872.

The previous prime is 3996439. The next prime is 3996467. The reversal of 3996447 is 7446993.

It is not a de Polignac number, because 3996447 - 2³ = 3996439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3996399 and 3996408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3996467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7047 + ... + 7592.

It is an arithmetic number, because the mean of its divisors is an integer number (409920).

Almost surely, 2^3996447 is an apocalyptic number.

3996447 is a deficient number, since it is larger than the sum of its proper divisors (2562273).

3996447 is a wasteful number, since it uses less digits than its factorization.

3996447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14662.

The product of its digits is 163296, while the sum is 42.

The square root of 3996447 is about 1999.1115526653. Note that the first 3 decimals coincide. The cubic root of 3996447 is about 158.6930909745.

The spelling of 3996447 in words is "three million, nine hundred ninety-six thousand, four hundred forty-seven".