227121439 has 2 divisors, whose sum is σ = 227121440. Its totient is φ = 227121438.

The previous prime is 227121397. The next prime is 227121457. The reversal of 227121439 is 934121722.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227121439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 227121439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227121539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113560719 + 113560720.

It is an arithmetic number, because the mean of its divisors is an integer number (113560720).

Almost surely, 2^227121439 is an apocalyptic number.

227121439 is a deficient number, since it is larger than the sum of its proper divisors (1).

227121439 is an equidigital number, since it uses as much as digits as its factorization.

227121439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 227121439 is about 15070.5487292268. The cubic root of 227121439 is about 610.1257816407.

The spelling of 227121439 in words is "two hundred twenty-seven million, one hundred twenty-one thousand, four hundred thirty-nine".