227917969 has 2 divisors, whose sum is σ = 227917970. Its totient is φ = 227917968.

The previous prime is 227917933. The next prime is 227917973. The reversal of 227917969 is 969719722.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190854225 + 37063744 = 13815^2 + 6088^2 .

It is a cyclic number.

It is not a de Polignac number, because 227917969 - 2⁷ = 227917841 is a prime.

It is a super-2 number, since 2×227917969² = 103893201186169922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (227917069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113958984 + 113958985.

It is an arithmetic number, because the mean of its divisors is an integer number (113958985).

Almost surely, 2^227917969 is an apocalyptic number.

It is an amenable number.

227917969 is a deficient number, since it is larger than the sum of its proper divisors (1).

227917969 is an equidigital number, since it uses as much as digits as its factorization.

227917969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 52.

The square root of 227917969 is about 15096.9523083303. The cubic root of 227917969 is about 610.8382000278.

The spelling of 227917969 in words is "two hundred twenty-seven million, nine hundred seventeen thousand, nine hundred sixty-nine".