28031080939 has 2 divisors, whose sum is σ = 28031080940. Its totient is φ = 28031080938.

The previous prime is 28031080877. The next prime is 28031080949. The reversal of 28031080939 is 93908013082.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28031080939 - 2¹⁷ = 28030949867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28031080895 and 28031080904.

It is not a weakly prime, because it can be changed into another prime (28031080949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14015540469 + 14015540470.

It is an arithmetic number, because the mean of its divisors is an integer number (14015540470).

Almost surely, 2^28031080939 is an apocalyptic number.

28031080939 is a deficient number, since it is larger than the sum of its proper divisors (1).

28031080939 is an equidigital number, since it uses as much as digits as its factorization.

28031080939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 28031080939 in words is "twenty-eight billion, thirty-one million, eighty thousand, nine hundred thirty-nine".