62439549421 has 2 divisors, whose sum is σ = 62439549422. Its totient is φ = 62439549420.

The previous prime is 62439549413. The next prime is 62439549433. The reversal of 62439549421 is 12494593426.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35694544900 + 26745004521 = 188930^2 + 163539^2 .

It is a cyclic number.

It is not a de Polignac number, because 62439549421 - 2³ = 62439549413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (62439549401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31219774710 + 31219774711.

It is an arithmetic number, because the mean of its divisors is an integer number (31219774711).

Almost surely, 2^62439549421 is an apocalyptic number.

It is an amenable number.

62439549421 is a deficient number, since it is larger than the sum of its proper divisors (1).

62439549421 is an equidigital number, since it uses as much as digits as its factorization.

62439549421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 49.

The spelling of 62439549421 in words is "sixty-two billion, four hundred thirty-nine million, five hundred forty-nine thousand, four hundred twenty-one".