219248077 has 2 divisors, whose sum is σ = 219248078. Its totient is φ = 219248076.

The previous prime is 219248039. The next prime is 219248083. The reversal of 219248077 is 770842912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218862436 + 385641 = 14794^2 + 621^2 .

It is a cyclic number.

It is not a de Polignac number, because 219248077 - 2⁷ = 219247949 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (219242077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109624038 + 109624039.

It is an arithmetic number, because the mean of its divisors is an integer number (109624039).

Almost surely, 2^219248077 is an apocalyptic number.

It is an amenable number.

219248077 is a deficient number, since it is larger than the sum of its proper divisors (1).

219248077 is an equidigital number, since it uses as much as digits as its factorization.

219248077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 219248077 is about 14807.0279597224. The cubic root of 219248077 is about 602.9925285119.

The spelling of 219248077 in words is "two hundred nineteen million, two hundred forty-eight thousand, seventy-seven".