220729349 has 2 divisors, whose sum is σ = 220729350. Its totient is φ = 220729348.

The previous prime is 220729307. The next prime is 220729357. The reversal of 220729349 is 943927022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165122500 + 55606849 = 12850^2 + 7457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220729349 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 (220728349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110364674 + 110364675.

It is an arithmetic number, because the mean of its divisors is an integer number (110364675).

Almost surely, 2^220729349 is an apocalyptic number.

It is an amenable number.

220729349 is a deficient number, since it is larger than the sum of its proper divisors (1).

220729349 is an equidigital number, since it uses as much as digits as its factorization.

220729349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 220729349 is about 14856.9629803672. The cubic root of 220729349 is about 604.3474502310.

The spelling of 220729349 in words is "two hundred twenty million, seven hundred twenty-nine thousand, three hundred forty-nine".