729409984 has 14 divisors (see below), whose sum is σ = 1447423064. Its totient is φ = 364704960.

The previous prime is 729409969. The next prime is 729409987. The reversal of 729409984 is 489904927.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729409987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5698452 + ... + 5698579.

Almost surely, 2^729409984 is an apocalyptic number.

It is an amenable number.

729409984 is a deficient number, since it is larger than the sum of its proper divisors (718013080).

729409984 is a wasteful number, since it uses less digits than its factorization.

729409984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11397043 (or 11397033 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 729409984 is about 27007.5912291341. The cubic root of 729409984 is about 900.1686860768.

The spelling of 729409984 in words is "seven hundred twenty-nine million, four hundred nine thousand, nine hundred eighty-four".