220454429 has 8 divisors (see below), whose sum is σ = 237621720. Its totient is φ = 203317056.

The previous prime is 220454387. The next prime is 220454449. The reversal of 220454429 is 924454022.

It can be written as a sum of positive squares in 4 ways, for example, as 57304900 + 163149529 = 7570^2 + 12773^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 220454429 - 2⁸ = 220454173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220454395 and 220454404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220454449) 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, 9227 + ... + 22935.

It is an arithmetic number, because the mean of its divisors is an integer number (29702715).

Almost surely, 2^220454429 is an apocalyptic number.

It is an amenable number.

220454429 is a deficient number, since it is larger than the sum of its proper divisors (17167291).

220454429 is a wasteful number, since it uses less digits than its factorization.

220454429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14959.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 220454429 is about 14847.7078702404. The cubic root of 220454429 is about 604.0964396174.

The spelling of 220454429 in words is "two hundred twenty million, four hundred fifty-four thousand, four hundred twenty-nine".