220949087 has 2 divisors, whose sum is σ = 220949088. Its totient is φ = 220949086.

The previous prime is 220949077. The next prime is 220949117. The reversal of 220949087 is 780949022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220949087 - 2⁶ = 220949023 is a prime.

It is a super-2 number, since 2×220949087² = 97636998092267138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220949077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110474543 + 110474544.

It is an arithmetic number, because the mean of its divisors is an integer number (110474544).

Almost surely, 2^220949087 is an apocalyptic number.

220949087 is a deficient number, since it is larger than the sum of its proper divisors (1).

220949087 is an equidigital number, since it uses as much as digits as its factorization.

220949087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 220949087 is about 14864.3562591859. The cubic root of 220949087 is about 604.5479281130.

The spelling of 220949087 in words is "two hundred twenty million, nine hundred forty-nine thousand, eighty-seven".