28986092749 has 2 divisors, whose sum is σ = 28986092750. Its totient is φ = 28986092748.

The previous prime is 28986092669. The next prime is 28986092753. The reversal of 28986092749 is 94729068982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28419890724 + 566202025 = 168582^2 + 23795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28986092749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28986092449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14493046374 + 14493046375.

It is an arithmetic number, because the mean of its divisors is an integer number (14493046375).

Almost surely, 2^28986092749 is an apocalyptic number.

It is an amenable number.

28986092749 is a deficient number, since it is larger than the sum of its proper divisors (1).

28986092749 is an equidigital number, since it uses as much as digits as its factorization.

28986092749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31352832, while the sum is 64.

The spelling of 28986092749 in words is "twenty-eight billion, nine hundred eighty-six million, ninety-two thousand, seven hundred forty-nine".