229989977 has 6 divisors (see below), whose sum is σ = 267539418. Its totient is φ = 197134224.

The previous prime is 229989959. The next prime is 229989989. The reversal of 229989977 is 779989922.

It can be written as a sum of positive squares in only one way, i.e., 206525641 + 23464336 = 14371^2 + 4844^2 .

It is not a de Polignac number, because 229989977 - 2⁶ = 229989913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229989937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2346788 + ... + 2346885.

It is an arithmetic number, because the mean of its divisors is an integer number (44589903).

Almost surely, 2^229989977 is an apocalyptic number.

It is an amenable number.

229989977 is a deficient number, since it is larger than the sum of its proper divisors (37549441).

229989977 is an equidigital number, since it uses as much as digits as its factorization.

229989977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693687 (or 4693680 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 62.

The square root of 229989977 is about 15165.4204359787. The cubic root of 229989977 is about 612.6836673680.

Subtracting 229989977 from its reverse (779989922), we obtain a palindrome (549999945).

The spelling of 229989977 in words is "two hundred twenty-nine million, nine hundred eighty-nine thousand, nine hundred seventy-seven".