228144977 has 2 divisors, whose sum is σ = 228144978. Its totient is φ = 228144976.

The previous prime is 228144967. The next prime is 228145013. The reversal of 228144977 is 779441822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228130816 + 14161 = 15104^2 + 119^2 .

It is a cyclic number.

It is not a de Polignac number, because 228144977 - 2¹² = 228140881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228144967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114072488 + 114072489.

It is an arithmetic number, because the mean of its divisors is an integer number (114072489).

Almost surely, 2^228144977 is an apocalyptic number.

It is an amenable number.

228144977 is a deficient number, since it is larger than the sum of its proper divisors (1).

228144977 is an equidigital number, since it uses as much as digits as its factorization.

228144977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 44.

The square root of 228144977 is about 15104.4687758292. The cubic root of 228144977 is about 611.0409325387.

The spelling of 228144977 in words is "two hundred twenty-eight million, one hundred forty-four thousand, nine hundred seventy-seven".