405224117 has 2 divisors, whose sum is σ = 405224118. Its totient is φ = 405224116.

The previous prime is 405224089. The next prime is 405224123. The reversal of 405224117 is 711422504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 281769796 + 123454321 = 16786^2 + 11111^2 .

It is a cyclic number.

It is not a de Polignac number, because 405224117 - 2²⁴ = 388446901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405224137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202612058 + 202612059.

It is an arithmetic number, because the mean of its divisors is an integer number (202612059).

Almost surely, 2^405224117 is an apocalyptic number.

It is an amenable number.

405224117 is a deficient number, since it is larger than the sum of its proper divisors (1).

405224117 is an equidigital number, since it uses as much as digits as its factorization.

405224117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 405224117 is about 20130.1792590131. The cubic root of 405224117 is about 740.0000712199. Note that the first 4 decimals are identical.

The spelling of 405224117 in words is "four hundred five million, two hundred twenty-four thousand, one hundred seventeen".