28935839 has 2 divisors, whose sum is σ = 28935840. Its totient is φ = 28935838.

The previous prime is 28935799. The next prime is 28935847. The reversal of 28935839 is 93853982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28935839 is a prime.

It is a super-3 number, since 3×28935839³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28935793 and 28935802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28935859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14467919 + 14467920.

It is an arithmetic number, because the mean of its divisors is an integer number (14467920).

Almost surely, 2^28935839 is an apocalyptic number.

28935839 is a deficient number, since it is larger than the sum of its proper divisors (1).

28935839 is an equidigital number, since it uses as much as digits as its factorization.

28935839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 47.

The square root of 28935839 is about 5379.2043091892. The cubic root of 28935839 is about 307.0049371967.

The spelling of 28935839 in words is "twenty-eight million, nine hundred thirty-five thousand, eight hundred thirty-nine".