28974139793 has 2 divisors, whose sum is σ = 28974139794. Its totient is φ = 28974139792.

The previous prime is 28974139763. The next prime is 28974139823. The reversal of 28974139793 is 39793147982.

It is a balanced prime because it is at equal distance from previous prime (28974139763) and next prime (28974139823).

It can be written as a sum of positive squares in only one way, i.e., 18218790529 + 10755349264 = 134977^2 + 103708^2 .

It is a cyclic number.

It is not a de Polignac number, because 28974139793 - 2³⁰ = 27900397969 is a prime.

It is not a weakly prime, because it can be changed into another prime (28974139763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14487069896 + 14487069897.

It is an arithmetic number, because the mean of its divisors is an integer number (14487069897).

Almost surely, 2^28974139793 is an apocalyptic number.

It is an amenable number.

28974139793 is a deficient number, since it is larger than the sum of its proper divisors (1).

28974139793 is an equidigital number, since it uses as much as digits as its factorization.

28974139793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20575296, while the sum is 62.

The spelling of 28974139793 in words is "twenty-eight billion, nine hundred seventy-four million, one hundred thirty-nine thousand, seven hundred ninety-three".