2023739 has 4 divisors (see below), whose sum is σ = 2026824. Its totient is φ = 2020656.

The previous prime is 2023727. The next prime is 2023741. The reversal of 2023739 is 9373202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9373202 = 2 ⋅4686601.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2023739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2023639) 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, 122 + ... + 2015.

It is an arithmetic number, because the mean of its divisors is an integer number (506706).

2^2023739 is an apocalyptic number.

2023739 is a deficient number, since it is larger than the sum of its proper divisors (3085).

2023739 is an equidigital number, since it uses as much as digits as its factorization.

2023739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3084.

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

The square root of 2023739 is about 1422.5818078409. The cubic root of 2023739 is about 126.4886333895.

The spelling of 2023739 in words is "two million, twenty-three thousand, seven hundred thirty-nine".