220242949 has 2 divisors, whose sum is σ = 220242950. Its totient is φ = 220242948.

The previous prime is 220242901. The next prime is 220242961. The reversal of 220242949 is 949242022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201838849 + 18404100 = 14207^2 + 4290^2 .

It is a cyclic number.

It is not a de Polignac number, because 220242949 - 2⁷ = 220242821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220242049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110121474 + 110121475.

It is an arithmetic number, because the mean of its divisors is an integer number (110121475).

Almost surely, 2^220242949 is an apocalyptic number.

It is an amenable number.

220242949 is a deficient number, since it is larger than the sum of its proper divisors (1).

220242949 is an equidigital number, since it uses as much as digits as its factorization.

220242949 is an odious number, because the sum of its binary digits is odd.

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

The square root of 220242949 is about 14840.5845235287. The cubic root of 220242949 is about 603.9032096778.

The spelling of 220242949 in words is "two hundred twenty million, two hundred forty-two thousand, nine hundred forty-nine".