1421488639 has 2 divisors, whose sum is σ = 1421488640. Its totient is φ = 1421488638.

The previous prime is 1421488597. The next prime is 1421488669. The reversal of 1421488639 is 9368841241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1421488639 - 2⁹ = 1421488127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421488669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710744319 + 710744320.

It is an arithmetic number, because the mean of its divisors is an integer number (710744320).

Almost surely, 2^1421488639 is an apocalyptic number.

1421488639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421488639 is an equidigital number, since it uses as much as digits as its factorization.

1421488639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 46.

The square root of 1421488639 is about 37702.6343774543. The cubic root of 1421488639 is about 1124.3835012993.

The spelling of 1421488639 in words is "one billion, four hundred twenty-one million, four hundred eighty-eight thousand, six hundred thirty-nine".