3996423 has 6 divisors (see below), whose sum is σ = 5772624. Its totient is φ = 2664276.

The previous prime is 3996413. The next prime is 3996431. The reversal of 3996423 is 3246993.

It is a happy number.

3996423 is a `hidden beast` number, since 3 + 9 + 9 + 642 + 3 = 666.

It is not a de Polignac number, because 3996423 - 2¹² = 3992327 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3996413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 222015 + ... + 222032.

It is an arithmetic number, because the mean of its divisors is an integer number (962104).

Almost surely, 2^3996423 is an apocalyptic number.

3996423 is a deficient number, since it is larger than the sum of its proper divisors (1776201).

3996423 is a wasteful number, since it uses less digits than its factorization.

3996423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444053 (or 444050 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 3996423 is about 1999.1055499898. The cubic root of 3996423 is about 158.6927733055.

It can be divided in two parts, 399642 and 3, that multiplied together give a triangular number (1198926 = T₁₅₄₈).

The spelling of 3996423 in words is "three million, nine hundred ninety-six thousand, four hundred twenty-three".