838562489 has 2 divisors, whose sum is σ = 838562490. Its totient is φ = 838562488.

The previous prime is 838562467. The next prime is 838562507. The reversal of 838562489 is 984265838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 525555625 + 313006864 = 22925^2 + 17692^2 .

It is a cyclic number.

It is not a de Polignac number, because 838562489 - 2⁸ = 838562233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 838562489.

It is not a weakly prime, because it can be changed into another prime (838562189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419281244 + 419281245.

It is an arithmetic number, because the mean of its divisors is an integer number (419281245).

Almost surely, 2^838562489 is an apocalyptic number.

It is an amenable number.

838562489 is a deficient number, since it is larger than the sum of its proper divisors (1).

838562489 is an equidigital number, since it uses as much as digits as its factorization.

838562489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3317760, while the sum is 53.

The square root of 838562489 is about 28957.9434525313. The cubic root of 838562489 is about 943.0002556464. Note that the first 3 decimals are identical.

The spelling of 838562489 in words is "eight hundred thirty-eight million, five hundred sixty-two thousand, four hundred eighty-nine".