3404728729 has 8 divisors (see below), whose sum is σ = 3515229440. Its totient is φ = 3294270000.

The previous prime is 3404728727. The next prime is 3404728787. The reversal of 3404728729 is 9278274043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3404728729 - 2¹ = 3404728727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3404728727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318979 + ... + 329479.

It is an arithmetic number, because the mean of its divisors is an integer number (439403680).

Almost surely, 2^3404728729 is an apocalyptic number.

It is an amenable number.

3404728729 is a deficient number, since it is larger than the sum of its proper divisors (110500711).

3404728729 is a wasteful number, since it uses less digits than its factorization.

3404728729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20991.

The product of its (nonzero) digits is 677376, while the sum is 46.

The square root of 3404728729 is about 58350.0533761538. The cubic root of 3404728729 is about 1504.3913874133.

The spelling of 3404728729 in words is "three billion, four hundred four million, seven hundred twenty-eight thousand, seven hundred twenty-nine".