28290044249 has 2 divisors, whose sum is σ = 28290044250. Its totient is φ = 28290044248.

The previous prime is 28290044227. The next prime is 28290044257. The reversal of 28290044249 is 94244009282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25806816025 + 2483228224 = 160645^2 + 49832^2 .

It is a cyclic number.

It is not a de Polignac number, because 28290044249 - 2¹⁶ = 28289978713 is a prime.

It is a super-2 number, since 2×28290044249² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28290040249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14145022124 + 14145022125.

It is an arithmetic number, because the mean of its divisors is an integer number (14145022125).

Almost surely, 2^28290044249 is an apocalyptic number.

It is an amenable number.

28290044249 is a deficient number, since it is larger than the sum of its proper divisors (1).

28290044249 is an equidigital number, since it uses as much as digits as its factorization.

28290044249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 28290044249 in words is "twenty-eight billion, two hundred ninety million, forty-four thousand, two hundred forty-nine".