3992723 has 4 divisors (see below), whose sum is σ = 4563120. Its totient is φ = 3422328.

The previous prime is 3992719. The next prime is 3992741. The reversal of 3992723 is 3272993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3272993 = 17 ⋅192529.

It is not a de Polignac number, because 3992723 - 2² = 3992719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3992713) 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, 285188 + ... + 285201.

It is an arithmetic number, because the mean of its divisors is an integer number (1140780).

Almost surely, 2^3992723 is an apocalyptic number.

3992723 is a deficient number, since it is larger than the sum of its proper divisors (570397).

3992723 is an equidigital number, since it uses as much as digits as its factorization.

3992723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570396.

The product of its digits is 20412, while the sum is 35.

The square root of 3992723 is about 1998.1799218289. The cubic root of 3992723 is about 158.6437841170.

The spelling of 3992723 in words is "three million, nine hundred ninety-two thousand, seven hundred twenty-three".