164401229 has 2 divisors, whose sum is σ = 164401230. Its totient is φ = 164401228.

The previous prime is 164401219. The next prime is 164401241. The reversal of 164401229 is 922104461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110040100 + 54361129 = 10490^2 + 7373^2 .

It is a cyclic number.

It is not a de Polignac number, because 164401229 - 2⁴ = 164401213 is a prime.

It is a super-3 number, since 3×164401229³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164401219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82200614 + 82200615.

It is an arithmetic number, because the mean of its divisors is an integer number (82200615).

Almost surely, 2^164401229 is an apocalyptic number.

It is an amenable number.

164401229 is a deficient number, since it is larger than the sum of its proper divisors (1).

164401229 is an equidigital number, since it uses as much as digits as its factorization.

164401229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 164401229 is about 12821.9042657477. The cubic root of 164401229 is about 547.8163878174.

The spelling of 164401229 in words is "one hundred sixty-four million, four hundred one thousand, two hundred twenty-nine".