27883969 has 2 divisors, whose sum is σ = 27883970. Its totient is φ = 27883968.

The previous prime is 27883957. The next prime is 27883987. The reversal of 27883969 is 96938872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25633969 + 2250000 = 5063^2 + 1500^2 .

It is a cyclic number.

It is not a de Polignac number, because 27883969 - 2⁵ = 27883937 is a prime.

It is a super-2 number, since 2×27883969² = 1555031454385922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27883939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13941984 + 13941985.

It is an arithmetic number, because the mean of its divisors is an integer number (13941985).

Almost surely, 2^27883969 is an apocalyptic number.

It is an amenable number.

27883969 is a deficient number, since it is larger than the sum of its proper divisors (1).

27883969 is an equidigital number, since it uses as much as digits as its factorization.

27883969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 52.

The square root of 27883969 is about 5280.5273410901. The cubic root of 27883969 is about 303.2388659123.

The spelling of 27883969 in words is "twenty-seven million, eight hundred eighty-three thousand, nine hundred sixty-nine".