80930221 has 4 divisors (see below), whose sum is σ = 81132444. Its totient is φ = 80728000.

The previous prime is 80930173. The next prime is 80930231. The reversal of 80930221 is 12203908.

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 59074596 + 21855625 = 7686^2 + 4675^2 .

It is a cyclic number.

It is not a de Polignac number, because 80930221 - 2¹³ = 80922029 is a prime.

It is a super-2 number, since 2×80930221² = 13099401342217682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80930231) 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, 100510 + ... + 101311.

It is an arithmetic number, because the mean of its divisors is an integer number (20283111).

Almost surely, 2^80930221 is an apocalyptic number.

It is an amenable number.

80930221 is a deficient number, since it is larger than the sum of its proper divisors (202223).

80930221 is a wasteful number, since it uses less digits than its factorization.

80930221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202222.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 80930221 is about 8996.1225536339. The cubic root of 80930221 is about 432.5505900482.

The spelling of 80930221 in words is "eighty million, nine hundred thirty thousand, two hundred twenty-one".