938040839 has 2 divisors, whose sum is σ = 938040840. Its totient is φ = 938040838.

The previous prime is 938040821. The next prime is 938040847.

938040839 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 938040839 - 2¹⁶ = 937975303 is a prime.

It is equal to p_47852837 and since 938040839 and 47852837 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 938040839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (938040869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469020419 + 469020420.

It is an arithmetic number, because the mean of its divisors is an integer number (469020420).

Almost surely, 2^938040839 is an apocalyptic number.

938040839 is a deficient number, since it is larger than the sum of its proper divisors (1).

938040839 is an equidigital number, since it uses as much as digits as its factorization.

938040839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 938040839 is about 30627.4523752793. The cubic root of 938040839 is about 978.9050797211.

The spelling of 938040839 in words is "nine hundred thirty-eight million, forty thousand, eight hundred thirty-nine".