4220977 has 2 divisors, whose sum is σ = 4220978. Its totient is φ = 4220976.

The previous prime is 4220971. The next prime is 4220987. The reversal of 4220977 is 7790224.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3381921 + 839056 = 1839^2 + 916^2 .

It is a cyclic number.

It is not a de Polignac number, because 4220977 - 2³ = 4220969 is a prime.

It is not a weakly prime, because it can be changed into another prime (4220971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110488 + 2110489.

It is an arithmetic number, because the mean of its divisors is an integer number (2110489).

Almost surely, 2^4220977 is an apocalyptic number.

It is an amenable number.

4220977 is a deficient number, since it is larger than the sum of its proper divisors (1).

4220977 is an equidigital number, since it uses as much as digits as its factorization.

4220977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 4220977 is about 2054.5016427348. The cubic root of 4220977 is about 161.6110289053.

The spelling of 4220977 in words is "four million, two hundred twenty thousand, nine hundred seventy-seven".