404414621 has 4 divisors (see below), whose sum is σ = 435523452. Its totient is φ = 373305792.

The previous prime is 404414579. The next prime is 404414653. The reversal of 404414621 is 126414404.

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

It can be written as a sum of positive squares in 2 ways, for example, as 116942596 + 287472025 = 10814^2 + 16955^2 .

It is a cyclic number.

It is not a de Polignac number, because 404414621 - 2⁶ = 404414557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404414321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15554396 + ... + 15554421.

It is an arithmetic number, because the mean of its divisors is an integer number (108880863).

Almost surely, 2^404414621 is an apocalyptic number.

It is an amenable number.

404414621 is a deficient number, since it is larger than the sum of its proper divisors (31108831).

404414621 is a wasteful number, since it uses less digits than its factorization.

404414621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31108830.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 404414621 is about 20110.0626801609. The cubic root of 404414621 is about 739.5069889986.

The spelling of 404414621 in words is "four hundred four million, four hundred fourteen thousand, six hundred twenty-one".