229797977 has 4 divisors (see below), whose sum is σ = 235142160. Its totient is φ = 224453796.

The previous prime is 229797929. The next prime is 229798039. The reversal of 229797977 is 779797922.

229797977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 229797977 - 2¹⁰ = 229796953 is a prime.

It is a super-2 number, since 2×229797977² = 105614220466585058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229727977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2672027 + ... + 2672112.

It is an arithmetic number, because the mean of its divisors is an integer number (58785540).

Almost surely, 2^229797977 is an apocalyptic number.

It is an amenable number.

229797977 is a deficient number, since it is larger than the sum of its proper divisors (5344183).

229797977 is an equidigital number, since it uses as much as digits as its factorization.

229797977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5344182.

The product of its digits is 7001316, while the sum is 59.

The square root of 229797977 is about 15159.0889238107. The cubic root of 229797977 is about 612.5131265825.

Subtracting 229797977 from its reverse (779797922), we obtain a palindrome (549999945).

The spelling of 229797977 in words is "two hundred twenty-nine million, seven hundred ninety-seven thousand, nine hundred seventy-seven".