3920723 has 4 divisors (see below), whose sum is σ = 3928320. Its totient is φ = 3913128.

The previous prime is 3920689. The next prime is 3920729. The reversal of 3920723 is 3270293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3270293 = 13 ⋅251561.

It is a cyclic number.

It is not a de Polignac number, because 3920723 - 2⁸ = 3920467 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3920692 and 3920701.

It is not an unprimeable number, because it can be changed into a prime (3920729) 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, 2963 + ... + 4076.

It is an arithmetic number, because the mean of its divisors is an integer number (982080).

Almost surely, 2^3920723 is an apocalyptic number.

3920723 is a deficient number, since it is larger than the sum of its proper divisors (7597).

3920723 is an equidigital number, since it uses as much as digits as its factorization.

3920723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7596.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 3920723 is about 1980.0815639766. The cubic root of 3920723 is about 157.6843964426.

The spelling of 3920723 in words is "three million, nine hundred twenty thousand, seven hundred twenty-three".