2939723 has 4 divisors (see below), whose sum is σ = 2968368. Its totient is φ = 2911080.

The previous prime is 2939707. The next prime is 2939747. The reversal of 2939723 is 3279392.

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 2939723 - 2⁴ = 2939707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2939753) 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, 14168 + ... + 14373.

It is an arithmetic number, because the mean of its divisors is an integer number (742092).

2^2939723 is an apocalyptic number.

2939723 is a deficient number, since it is larger than the sum of its proper divisors (28645).

2939723 is a wasteful number, since it uses less digits than its factorization.

2939723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28644.

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

The square root of 2939723 is about 1714.5620432052. The cubic root of 2939723 is about 143.2524758782.

The spelling of 2939723 in words is "two million, nine hundred thirty-nine thousand, seven hundred twenty-three".