404055111 has 4 divisors (see below), whose sum is σ = 538740152. Its totient is φ = 269370072.

The previous prime is 404055103. The next prime is 404055137. The reversal of 404055111 is 111550404.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 404055111 - 2³ = 404055103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404055151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67342516 + ... + 67342521.

It is an arithmetic number, because the mean of its divisors is an integer number (134685038).

Almost surely, 2^404055111 is an apocalyptic number.

404055111 is a deficient number, since it is larger than the sum of its proper divisors (134685041).

404055111 is a wasteful number, since it uses less digits than its factorization.

404055111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134685040.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 404055111 is about 20101.1221328562. The cubic root of 404055111 is about 739.2877923600.

The spelling of 404055111 in words is "four hundred four million, fifty-five thousand, one hundred eleven".