404214081 has 4 divisors (see below), whose sum is σ = 538952112. Its totient is φ = 269476052.

The previous prime is 404214073. The next prime is 404214119. The reversal of 404214081 is 180412404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404214081 - 2³ = 404214073 is a prime.

It is a super-2 number, since 2×404214081² = 326778046557349122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (404214001) 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, 67369011 + ... + 67369016.

It is an arithmetic number, because the mean of its divisors is an integer number (134738028).

Almost surely, 2^404214081 is an apocalyptic number.

It is an amenable number.

404214081 is a deficient number, since it is larger than the sum of its proper divisors (134738031).

404214081 is a wasteful number, since it uses less digits than its factorization.

404214081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134738030.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 404214081 is about 20105.0760008511. The cubic root of 404214081 is about 739.3847338974.

Adding to 404214081 its reverse (180412404), we get a palindrome (584626485).

The spelling of 404214081 in words is "four hundred four million, two hundred fourteen thousand, eighty-one".