27983477 has 2 divisors, whose sum is σ = 27983478. Its totient is φ = 27983476.

The previous prime is 27983429. The next prime is 27983489. The reversal of 27983477 is 77438972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24196561 + 3786916 = 4919^2 + 1946^2 .

It is a cyclic number.

It is not a de Polignac number, because 27983477 - 2⁶ = 27983413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27983407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13991738 + 13991739.

It is an arithmetic number, because the mean of its divisors is an integer number (13991739).

Almost surely, 2^27983477 is an apocalyptic number.

It is an amenable number.

27983477 is a deficient number, since it is larger than the sum of its proper divisors (1).

27983477 is an equidigital number, since it uses as much as digits as its factorization.

27983477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 47.

The square root of 27983477 is about 5289.9411149842. The cubic root of 27983477 is about 303.5991550065.

The spelling of 27983477 in words is "twenty-seven million, nine hundred eighty-three thousand, four hundred seventy-seven".