2039923 has 4 divisors (see below), whose sum is σ = 2045088. Its totient is φ = 2034760.

The previous prime is 2039911. The next prime is 2039927. The reversal of 2039923 is 3299302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3299302 = 2 ⋅1649651.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2039923 is a prime.

It is a super-2 number, since 2×2039923² = 8322571691858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2039891 and 2039900.

It is not an unprimeable number, because it can be changed into a prime (2039927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1936 + ... + 2797.

It is an arithmetic number, because the mean of its divisors is an integer number (511272).

2^2039923 is an apocalyptic number.

2039923 is a deficient number, since it is larger than the sum of its proper divisors (5165).

2039923 is an equidigital number, since it uses as much as digits as its factorization.

2039923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5164.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 2039923 is about 1428.2587300626. The cubic root of 2039923 is about 126.8249183946.

The spelling of 2039923 in words is "two million, thirty-nine thousand, nine hundred twenty-three".