227621399 has 2 divisors, whose sum is σ = 227621400. Its totient is φ = 227621398.

The previous prime is 227621389. The next prime is 227621411. The reversal of 227621399 is 993126722.

227621399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227621399 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 (227621389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113810699 + 113810700.

It is an arithmetic number, because the mean of its divisors is an integer number (113810700).

Almost surely, 2^227621399 is an apocalyptic number.

227621399 is a deficient number, since it is larger than the sum of its proper divisors (1).

227621399 is an equidigital number, since it uses as much as digits as its factorization.

227621399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The square root of 227621399 is about 15087.1269299360. The cubic root of 227621399 is about 610.5731413359.

The spelling of 227621399 in words is "two hundred twenty-seven million, six hundred twenty-one thousand, three hundred ninety-nine".