730998389 has 24 divisors (see below), whose sum is σ = 851641560. Its totient is φ = 625856000.

The previous prime is 730998371. The next prime is 730998407. The reversal of 730998389 is 983899037.

730998389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (730998371) and next prime (730998407).

It can be written as a sum of positive squares in 4 ways, for example, as 4695889 + 726302500 = 2167^2 + 26950^2 .

It is not a de Polignac number, because 730998389 - 2⁸ = 730998133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730998329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141329 + ... + 146409.

It is an arithmetic number, because the mean of its divisors is an integer number (35485065).

Almost surely, 2^730998389 is an apocalyptic number.

It is an amenable number.

730998389 is a deficient number, since it is larger than the sum of its proper divisors (120643171).

730998389 is a wasteful number, since it uses less digits than its factorization.

730998389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173 (or 5162 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 56.

The square root of 730998389 is about 27036.9818766814. The cubic root of 730998389 is about 900.8216319884.

The spelling of 730998389 in words is "seven hundred thirty million, nine hundred ninety-eight thousand, three hundred eighty-nine".