220429249 has 4 divisors (see below), whose sum is σ = 220548564. Its totient is φ = 220309936.

The previous prime is 220429219. The next prime is 220429271. The reversal of 220429249 is 942924022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 182385025 + 38044224 = 13505^2 + 6168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220429249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220429219) 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, 56842 + ... + 60595.

It is an arithmetic number, because the mean of its divisors is an integer number (55137141).

Almost surely, 2^220429249 is an apocalyptic number.

It is an amenable number.

220429249 is a deficient number, since it is larger than the sum of its proper divisors (119315).

220429249 is a wasteful number, since it uses less digits than its factorization.

220429249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119314.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 220429249 is about 14846.8599036968. The cubic root of 220429249 is about 604.0734390551.

The spelling of 220429249 in words is "two hundred twenty million, four hundred twenty-nine thousand, two hundred forty-nine".