272221393 has 2 divisors, whose sum is σ = 272221394. Its totient is φ = 272221392.

The previous prime is 272221381. The next prime is 272221403. The reversal of 272221393 is 393122272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242985744 + 29235649 = 15588^2 + 5407^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-272221393 is a prime.

It is not a weakly prime, because it can be changed into another prime (272221333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136110696 + 136110697.

It is an arithmetic number, because the mean of its divisors is an integer number (136110697).

Almost surely, 2^272221393 is an apocalyptic number.

It is an amenable number.

272221393 is a deficient number, since it is larger than the sum of its proper divisors (1).

272221393 is an equidigital number, since it uses as much as digits as its factorization.

272221393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 272221393 is about 16499.1330984388. The cubic root of 272221393 is about 648.0981036057.

The spelling of 272221393 in words is "two hundred seventy-two million, two hundred twenty-one thousand, three hundred ninety-three".