220107749 has 2 divisors, whose sum is σ = 220107750. Its totient is φ = 220107748.

The previous prime is 220107737. The next prime is 220107757. The reversal of 220107749 is 947701022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218507524 + 1600225 = 14782^2 + 1265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220107749 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220107779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110053874 + 110053875.

It is an arithmetic number, because the mean of its divisors is an integer number (110053875).

Almost surely, 2^220107749 is an apocalyptic number.

It is an amenable number.

220107749 is a deficient number, since it is larger than the sum of its proper divisors (1).

220107749 is an equidigital number, since it uses as much as digits as its factorization.

220107749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 220107749 is about 14836.0287476130. The cubic root of 220107749 is about 603.7796121885.

The spelling of 220107749 in words is "two hundred twenty million, one hundred seven thousand, seven hundred forty-nine".