404873729 has 16 divisors (see below), whose sum is σ = 448460544. Its totient is φ = 363139200.

The previous prime is 404873723. The next prime is 404873743. The reversal of 404873729 is 927378404.

It is a cyclic number.

It is not a de Polignac number, because 404873729 - 2¹⁶ = 404808193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 404873729.

It is not an unprimeable number, because it can be changed into a prime (404873723) 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, 143042 + ... + 145844.

It is an arithmetic number, because the mean of its divisors is an integer number (28028784).

Almost surely, 2^404873729 is an apocalyptic number.

It is an amenable number.

404873729 is a deficient number, since it is larger than the sum of its proper divisors (43586815).

404873729 is a wasteful number, since it uses less digits than its factorization.

404873729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 404873729 is about 20121.4743247109. The cubic root of 404873729 is about 739.7867226857.

It can be divided in two parts, 4048 and 73729, that added together give a palindrome (77777).

The spelling of 404873729 in words is "four hundred four million, eight hundred seventy-three thousand, seven hundred twenty-nine".