404211155 has 8 divisors (see below), whose sum is σ = 488873472. Its totient is φ = 320822208.

The previous prime is 404211151. The next prime is 404211167. The reversal of 404211155 is 551112404.

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 404211155 - 2² = 404211151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404211155.

It is not an unprimeable number, because it can be changed into a prime (404211151) 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, 317642 + ... + 318911.

It is an arithmetic number, because the mean of its divisors is an integer number (61109184).

Almost surely, 2^404211155 is an apocalyptic number.

404211155 is a deficient number, since it is larger than the sum of its proper divisors (84662317).

404211155 is a wasteful number, since it uses less digits than its factorization.

404211155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636685.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 404211155 is about 20105.0032330264. The cubic root of 404211155 is about 739.3829498222.

Adding to 404211155 its reverse (551112404), we get a palindrome (955323559).

The spelling of 404211155 in words is "four hundred four million, two hundred eleven thousand, one hundred fifty-five".