3956423 has 4 divisors (see below), whose sum is σ = 3985440. Its totient is φ = 3927408.

The previous prime is 3956419. The next prime is 3956429. The reversal of 3956423 is 3246593.

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

It is a cyclic number.

It is not a de Polignac number, because 3956423 - 2² = 3956419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3956423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3956429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14303 + ... + 14576.

It is an arithmetic number, because the mean of its divisors is an integer number (996360).

Almost surely, 2^3956423 is an apocalyptic number.

3956423 is a deficient number, since it is larger than the sum of its proper divisors (29017).

3956423 is a wasteful number, since it uses less digits than its factorization.

3956423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29016.

The product of its digits is 19440, while the sum is 32.

The square root of 3956423 is about 1989.0759160977. The cubic root of 3956423 is about 158.1615476353.

The spelling of 3956423 in words is "three million, nine hundred fifty-six thousand, four hundred twenty-three".