485220389 has 2 divisors, whose sum is σ = 485220390. Its totient is φ = 485220388.

The previous prime is 485220377. The next prime is 485220469. The reversal of 485220389 is 983022584.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 449016100 + 36204289 = 21190^2 + 6017^2 .

It is a cyclic number.

It is not a de Polignac number, because 485220389 - 2²⁸ = 216784933 is a prime.

It is a super-2 number, since 2×485220389² = 470877651802622642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (485220289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242610194 + 242610195.

It is an arithmetic number, because the mean of its divisors is an integer number (242610195).

Almost surely, 2^485220389 is an apocalyptic number.

It is an amenable number.

485220389 is a deficient number, since it is larger than the sum of its proper divisors (1).

485220389 is an equidigital number, since it uses as much as digits as its factorization.

485220389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 485220389 is about 22027.7186517351. The cubic root of 485220389 is about 785.8017902181.

The spelling of 485220389 in words is "four hundred eighty-five million, two hundred twenty thousand, three hundred eighty-nine".