404096521 has 4 divisors (see below), whose sum is σ = 407873232. Its totient is φ = 400319812.

The previous prime is 404096519. The next prime is 404096531. The reversal of 404096521 is 125690404.

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 404096521 - 2¹ = 404096519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404096531) 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, 1888195 + ... + 1888408.

It is an arithmetic number, because the mean of its divisors is an integer number (101968308).

Almost surely, 2^404096521 is an apocalyptic number.

It is an amenable number.

404096521 is a deficient number, since it is larger than the sum of its proper divisors (3776711).

404096521 is a wasteful number, since it uses less digits than its factorization.

404096521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776710.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 404096521 is about 20102.1521484641. The cubic root of 404096521 is about 739.3130470517.

The spelling of 404096521 in words is "four hundred four million, ninety-six thousand, five hundred twenty-one".