27764449 has 2 divisors, whose sum is σ = 27764450. Its totient is φ = 27764448.

The previous prime is 27764411. The next prime is 27764459. The reversal of 27764449 is 94446772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27373824 + 390625 = 5232^2 + 625^2 .

It is a cyclic number.

It is not a de Polignac number, because 27764449 - 2⁹ = 27763937 is a prime.

It is not a weakly prime, because it can be changed into another prime (27764459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13882224 + 13882225.

It is an arithmetic number, because the mean of its divisors is an integer number (13882225).

Almost surely, 2^27764449 is an apocalyptic number.

It is an amenable number.

27764449 is a deficient number, since it is larger than the sum of its proper divisors (1).

27764449 is an equidigital number, since it uses as much as digits as its factorization.

27764449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 43.

The square root of 27764449 is about 5269.1981363392. The cubic root of 27764449 is about 302.8049843957.

It can be divided in two parts, 2776 and 4449, that added together give a square (7225 = 85²).

The spelling of 27764449 in words is "twenty-seven million, seven hundred sixty-four thousand, four hundred forty-nine".