229810621 has 4 divisors (see below), whose sum is σ = 229863744. Its totient is φ = 229757500.

The previous prime is 229810601. The next prime is 229810661. The reversal of 229810621 is 126018922.

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 229810621 - 2⁹ = 229810109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229810601) 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, 19435 + ... + 28936.

It is an arithmetic number, because the mean of its divisors is an integer number (57465936).

Almost surely, 2^229810621 is an apocalyptic number.

It is an amenable number.

229810621 is a deficient number, since it is larger than the sum of its proper divisors (53123).

229810621 is an equidigital number, since it uses as much as digits as its factorization.

229810621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53122.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 229810621 is about 15159.5059616071. The cubic root of 229810621 is about 612.5243603250.

The spelling of 229810621 in words is "two hundred twenty-nine million, eight hundred ten thousand, six hundred twenty-one".