704940389 has 2 divisors, whose sum is σ = 704940390. Its totient is φ = 704940388.

The previous prime is 704940373. The next prime is 704940407. The reversal of 704940389 is 983049407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 550137025 + 154803364 = 23455^2 + 12442^2 .

It is a cyclic number.

It is not a de Polignac number, because 704940389 - 2⁴ = 704940373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (704940889) 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, 352470194 + 352470195.

It is an arithmetic number, because the mean of its divisors is an integer number (352470195).

Almost surely, 2^704940389 is an apocalyptic number.

It is an amenable number.

704940389 is a deficient number, since it is larger than the sum of its proper divisors (1).

704940389 is an equidigital number, since it uses as much as digits as its factorization.

704940389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 704940389 is about 26550.7135309016. The cubic root of 704940389 is about 889.9879596907.

The spelling of 704940389 in words is "seven hundred four million, nine hundred forty thousand, three hundred eighty-nine".