2039423797 has 4 divisors (see below), whose sum is σ = 2072857036. Its totient is φ = 2005990560.

The previous prime is 2039423783. The next prime is 2039423807. The reversal of 2039423797 is 7973249302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19280881 + 2020142916 = 4391^2 + 44946^2 .

It is a cyclic number.

It is not a de Polignac number, because 2039423797 - 2¹⁹ = 2038899509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2039423747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16716528 + ... + 16716649.

It is an arithmetic number, because the mean of its divisors is an integer number (518214259).

Almost surely, 2^2039423797 is an apocalyptic number.

It is an amenable number.

2039423797 is a deficient number, since it is larger than the sum of its proper divisors (33433239).

2039423797 is an equidigital number, since it uses as much as digits as its factorization.

2039423797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33433238.

The product of its (nonzero) digits is 571536, while the sum is 46.

The square root of 2039423797 is about 45159.9800376395. The cubic root of 2039423797 is about 1268.1457216337.

The spelling of 2039423797 in words is "two billion, thirty-nine million, four hundred twenty-three thousand, seven hundred ninety-seven".