80416021 has 4 divisors (see below), whose sum is σ = 91904032. Its totient is φ = 68928012.

The previous prime is 80416009. The next prime is 80416031. The reversal of 80416021 is 12061408.

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 80416021 - 2¹⁷ = 80284949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80415983 and 80416001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80416031) 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, 5743995 + ... + 5744008.

It is an arithmetic number, because the mean of its divisors is an integer number (22976008).

Almost surely, 2^80416021 is an apocalyptic number.

It is an amenable number.

80416021 is a deficient number, since it is larger than the sum of its proper divisors (11488011).

80416021 is a wasteful number, since it uses less digits than its factorization.

80416021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11488010.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 80416021 is about 8967.4980345691. The cubic root of 80416021 is about 431.6325554225.

Adding to 80416021 its reverse (12061408), we get a palindrome (92477429).

The spelling of 80416021 in words is "eighty million, four hundred sixteen thousand, twenty-one".