28339237939 has 2 divisors, whose sum is σ = 28339237940. Its totient is φ = 28339237938.

The previous prime is 28339237921. The next prime is 28339237951. The reversal of 28339237939 is 93973293382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28339237939 - 2⁵ = 28339237907 is a prime.

It is a super-2 number, since 2×28339237939² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28339237909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14169618969 + 14169618970.

It is an arithmetic number, because the mean of its divisors is an integer number (14169618970).

Almost surely, 2^28339237939 is an apocalyptic number.

28339237939 is a deficient number, since it is larger than the sum of its proper divisors (1).

28339237939 is an equidigital number, since it uses as much as digits as its factorization.

28339237939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13226976, while the sum is 58.

The spelling of 28339237939 in words is "twenty-eight billion, three hundred thirty-nine million, two hundred thirty-seven thousand, nine hundred thirty-nine".