404001929 has 8 divisors (see below), whose sum is σ = 423660360. Its totient is φ = 384725376.

The previous prime is 404001847. The next prime is 404001943. The reversal of 404001929 is 929100404.

It can be written as a sum of positive squares in 4 ways, for example, as 21603904 + 382398025 = 4648^2 + 19555^2 .

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 404001929 - 2⁸ = 404001673 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404001979) 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, 93302 + ... + 97535.

It is an arithmetic number, because the mean of its divisors is an integer number (52957545).

Almost surely, 2^404001929 is an apocalyptic number.

It is an amenable number.

404001929 is a deficient number, since it is larger than the sum of its proper divisors (19658431).

404001929 is a wasteful number, since it uses less digits than its factorization.

404001929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190939.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 404001929 is about 20099.7992278530. The cubic root of 404001929 is about 739.2553557547.

The spelling of 404001929 in words is "four hundred four million, one thousand, nine hundred twenty-nine".