220008977 has 2 divisors, whose sum is σ = 220008978. Its totient is φ = 220008976.

The previous prime is 220008959. The next prime is 220009001. The reversal of 220008977 is 779800022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155351296 + 64657681 = 12464^2 + 8041^2 .

It is a cyclic number.

It is not a de Polignac number, because 220008977 - 2¹² = 220004881 is a prime.

It is not a weakly prime, because it can be changed into another prime (220008947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110004488 + 110004489.

It is an arithmetic number, because the mean of its divisors is an integer number (110004489).

Almost surely, 2^220008977 is an apocalyptic number.

It is an amenable number.

220008977 is a deficient number, since it is larger than the sum of its proper divisors (1).

220008977 is an equidigital number, since it uses as much as digits as its factorization.

220008977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 220008977 is about 14832.6995857126. The cubic root of 220008977 is about 603.6892845454.

Adding to 220008977 its reverse (779800022), we get a palindrome (999808999).

The spelling of 220008977 in words is "two hundred twenty million, eight thousand, nine hundred seventy-seven".