80404421 has 4 divisors (see below), whose sum is σ = 82998144. Its totient is φ = 77810700.

The previous prime is 80404381. The next prime is 80404427. The reversal of 80404421 is 12440408.

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 80404421 - 2¹⁴ = 80388037 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 (80404427) 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, 1296815 + ... + 1296876.

It is an arithmetic number, because the mean of its divisors is an integer number (20749536).

Almost surely, 2^80404421 is an apocalyptic number.

It is an amenable number.

80404421 is a deficient number, since it is larger than the sum of its proper divisors (2593723).

80404421 is a wasteful number, since it uses less digits than its factorization.

80404421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593722.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 80404421 is about 8966.8512310621. The cubic root of 80404421 is about 431.6118001122.

Adding to 80404421 its reverse (12440408), we get a palindrome (92844829).

The spelling of 80404421 in words is "eighty million, four hundred four thousand, four hundred twenty-one".