404720029 has 16 divisors (see below), whose sum is σ = 487445760. Its totient is φ = 328521600.

The previous prime is 404719967. The next prime is 404720039. The reversal of 404720029 is 920027404.

It is a cyclic number.

It is not a de Polignac number, because 404720029 - 2¹⁹ = 404195741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404719979 and 404720006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404720039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3817 + ... + 28705.

It is an arithmetic number, because the mean of its divisors is an integer number (30465360).

Almost surely, 2^404720029 is an apocalyptic number.

It is an amenable number.

404720029 is a deficient number, since it is larger than the sum of its proper divisors (82725731).

404720029 is a wasteful number, since it uses less digits than its factorization.

404720029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25020.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 404720029 is about 20117.6546595273. The cubic root of 404720029 is about 739.6930971077.

The spelling of 404720029 in words is "four hundred four million, seven hundred twenty thousand, twenty-nine".