220349403 has 20 divisors (see below), whose sum is σ = 346490760. Its totient is φ = 139167072.

The previous prime is 220349357. The next prime is 220349411. The reversal of 220349403 is 304943022.

It is a happy number.

220349403 is a `hidden beast` number, since 220 + 34 + 9 + 403 = 666.

220349403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220349403 - 2¹⁰ = 220348379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (220349413) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 70050 + ... + 73127.

It is an arithmetic number, because the mean of its divisors is an integer number (17324538).

Almost surely, 2^220349403 is an apocalyptic number.

220349403 is a deficient number, since it is larger than the sum of its proper divisors (126141357).

220349403 is a wasteful number, since it uses less digits than its factorization.

220349403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143208 (or 143199 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 220349403 is about 14844.1706740390. The cubic root of 220349403 is about 604.0004924853. Note that the first 3 decimals are identical.

The spelling of 220349403 in words is "two hundred twenty million, three hundred forty-nine thousand, four hundred three".