729069939 has 48 divisors (see below), whose sum is σ = 1253109312. Its totient is φ = 403881984.

The previous prime is 729069931. The next prime is 729069959. The reversal of 729069939 is 939960927.

It is not a de Polignac number, because 729069939 - 2³ = 729069931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (729069931) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37779 + ... + 53715.

It is an arithmetic number, because the mean of its divisors is an integer number (26106444).

Almost surely, 2^729069939 is an apocalyptic number.

729069939 is a deficient number, since it is larger than the sum of its proper divisors (524039373).

729069939 is a wasteful number, since it uses less digits than its factorization.

729069939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15996 (or 15993 counting only the distinct ones).

The product of its (nonzero) digits is 1653372, while the sum is 54.

The square root of 729069939 is about 27001.2951356041. The cubic root of 729069939 is about 900.0287805611.

The spelling of 729069939 in words is "seven hundred twenty-nine million, sixty-nine thousand, nine hundred thirty-nine".