2039404837 has 4 divisors (see below), whose sum is σ = 2039578156. Its totient is φ = 2039231520.

The previous prime is 2039404789. The next prime is 2039404849. The reversal of 2039404837 is 7384049302.

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 533887236 + 1505517601 = 23106^2 + 38801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2039404837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2039404837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2039404867) 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, 67614 + ... + 93007.

It is an arithmetic number, because the mean of its divisors is an integer number (509894539).

Almost surely, 2^2039404837 is an apocalyptic number.

It is an amenable number.

2039404837 is a deficient number, since it is larger than the sum of its proper divisors (173319).

2039404837 is a wasteful number, since it uses less digits than its factorization.

2039404837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173318.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 2039404837 is about 45159.7701167754. The cubic root of 2039404837 is about 1268.1417917463.

The spelling of 2039404837 in words is "two billion, thirty-nine million, four hundred four thousand, eight hundred thirty-seven".