28730992439 has 2 divisors, whose sum is σ = 28730992440. Its totient is φ = 28730992438.

The previous prime is 28730992429. The next prime is 28730992469. The reversal of 28730992439 is 93429903782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28730992439 - 2⁸ = 28730992183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28730992429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14365496219 + 14365496220.

It is an arithmetic number, because the mean of its divisors is an integer number (14365496220).

Almost surely, 2^28730992439 is an apocalyptic number.

28730992439 is a deficient number, since it is larger than the sum of its proper divisors (1).

28730992439 is an equidigital number, since it uses as much as digits as its factorization.

28730992439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 56.

The spelling of 28730992439 in words is "twenty-eight billion, seven hundred thirty million, nine hundred ninety-two thousand, four hundred thirty-nine".