729440924 has 12 divisors (see below), whose sum is σ = 1279258344. Its totient is φ = 363938544.

The previous prime is 729440923. The next prime is 729440927. The reversal of 729440924 is 429044927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729440923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193379 + ... + 197114.

It is an arithmetic number, because the mean of its divisors is an integer number (106604862).

Almost surely, 2^729440924 is an apocalyptic number.

It is an amenable number.

729440924 is a deficient number, since it is larger than the sum of its proper divisors (549817420).

729440924 is a wasteful number, since it uses less digits than its factorization.

729440924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390964 (or 390962 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 729440924 is about 27008.1640249759. The cubic root of 729440924 is about 900.1814136356.

The spelling of 729440924 in words is "seven hundred twenty-nine million, four hundred forty thousand, nine hundred twenty-four".