227985397 has 2 divisors, whose sum is σ = 227985398. Its totient is φ = 227985396.

The previous prime is 227985371. The next prime is 227985409. The reversal of 227985397 is 793589722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219306481 + 8678916 = 14809^2 + 2946^2 .

It is a cyclic number.

It is not a de Polignac number, because 227985397 - 2¹⁹ = 227461109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227986397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113992698 + 113992699.

It is an arithmetic number, because the mean of its divisors is an integer number (113992699).

Almost surely, 2^227985397 is an apocalyptic number.

It is an amenable number.

227985397 is a deficient number, since it is larger than the sum of its proper divisors (1).

227985397 is an equidigital number, since it uses as much as digits as its factorization.

227985397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 52.

The square root of 227985397 is about 15099.1853091483. The cubic root of 227985397 is about 610.8984315478.

The spelling of 227985397 in words is "two hundred twenty-seven million, nine hundred eighty-five thousand, three hundred ninety-seven".