729698398 has 64 divisors (see below), whose sum is σ = 1337978880. Its totient is φ = 295682400.

The previous prime is 729698383. The next prime is 729698399. The reversal of 729698398 is 893896927.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729698399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1498111 + ... + 1498597.

It is an arithmetic number, because the mean of its divisors is an integer number (20905920).

Almost surely, 2^729698398 is an apocalyptic number.

729698398 is a deficient number, since it is larger than the sum of its proper divisors (608280482).

729698398 is a wasteful number, since it uses less digits than its factorization.

729698398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570 (or 544 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 61.

The square root of 729698398 is about 27012.9302001838. The cubic root of 729698398 is about 900.2873148526.

The spelling of 729698398 in words is "seven hundred twenty-nine million, six hundred ninety-eight thousand, three hundred ninety-eight".