3967723 has 4 divisors (see below), whose sum is σ = 3972208. Its totient is φ = 3963240.

The previous prime is 3967699. The next prime is 3967727. The reversal of 3967723 is 3277693.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3967723 - 2¹³ = 3959531 is a prime.

It is a d-powerful number, because it can be written as 3⁸ + 9⁴ + 6⁸ + 7³ + 7³ + 2²¹ + 3¹¹ .

It is a Duffinian number.

3967723 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3967727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423 + ... + 2848.

It is an arithmetic number, because the mean of its divisors is an integer number (993052).

Almost surely, 2^3967723 is an apocalyptic number.

3967723 is a deficient number, since it is larger than the sum of its proper divisors (4485).

3967723 is a wasteful number, since it uses less digits than its factorization.

3967723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484.

The product of its digits is 47628, while the sum is 37.

The square root of 3967723 is about 1991.9144057916. The cubic root of 3967723 is about 158.3119803768.

The spelling of 3967723 in words is "three million, nine hundred sixty-seven thousand, seven hundred twenty-three".