5421239437 has 2 divisors, whose sum is σ = 5421239438. Its totient is φ = 5421239436.

The previous prime is 5421239401. The next prime is 5421239441. The reversal of 5421239437 is 7349321245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5153229796 + 268009641 = 71786^2 + 16371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5421239437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5421239437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5421239137) 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 as a sum of consecutive naturals, namely, 2710619718 + 2710619719.

It is an arithmetic number, because the mean of its divisors is an integer number (2710619719).

Almost surely, 2^5421239437 is an apocalyptic number.

It is an amenable number.

5421239437 is a deficient number, since it is larger than the sum of its proper divisors (1).

5421239437 is an equidigital number, since it uses as much as digits as its factorization.

5421239437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 40.

The square root of 5421239437 is about 73629.0665226716. The cubic root of 5421239437 is about 1756.7078001227.

The spelling of 5421239437 in words is "five billion, four hundred twenty-one million, two hundred thirty-nine thousand, four hundred thirty-seven".