28042912939 has 2 divisors, whose sum is σ = 28042912940. Its totient is φ = 28042912938.

The previous prime is 28042912897. The next prime is 28042912951. The reversal of 28042912939 is 93921924082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28042912939 - 2¹⁷ = 28042781867 is a prime.

It is a super-2 number, since 2×28042912939² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28042912892 and 28042912901.

It is not a weakly prime, because it can be changed into another prime (28042912439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14021456469 + 14021456470.

It is an arithmetic number, because the mean of its divisors is an integer number (14021456470).

Almost surely, 2^28042912939 is an apocalyptic number.

28042912939 is a deficient number, since it is larger than the sum of its proper divisors (1).

28042912939 is an equidigital number, since it uses as much as digits as its factorization.

28042912939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 28042912939 in words is "twenty-eight billion, forty-two million, nine hundred twelve thousand, nine hundred thirty-nine".