641229 has 8 divisors (see below), whose sum is σ = 859872. Its totient is φ = 425040.

The previous prime is 641227. The next prime is 641239. The reversal of 641229 is 922146.

641229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 641229 - 2¹ = 641227 is a prime.

It is a super-2 number, since 2×641229² = 822349260882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641199 and 641208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127 + ... + 1139.

It is an arithmetic number, because the mean of its divisors is an integer number (107484).

2⁶⁴¹²²⁹ is an apocalyptic number.

It is an amenable number.

641229 is a deficient number, since it is larger than the sum of its proper divisors (218643).

641229 is a wasteful number, since it uses less digits than its factorization.

641229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227.

The product of its digits is 864, while the sum is 24.

The square root of 641229 is about 800.7677565936. The cubic root of 641229 is about 86.2325148340.

It can be divided in two parts, 6412 and 29, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 641229 in words is "six hundred forty-one thousand, two hundred twenty-nine".