80421471 has 64 divisors (see below), whose sum is σ = 139776000. Its totient is φ = 45256320.

The previous prime is 80421457. The next prime is 80421479. The reversal of 80421471 is 17412408.

It is not a de Polignac number, because 80421471 - 2¹⁰ = 80420447 is a prime.

It is a super-3 number, since 3×80421471³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80421479) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 206545 + ... + 206933.

It is an arithmetic number, because the mean of its divisors is an integer number (2184000).

Almost surely, 2^80421471 is an apocalyptic number.

80421471 is a deficient number, since it is larger than the sum of its proper divisors (59354529).

80421471 is a wasteful number, since it uses less digits than its factorization.

80421471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 80421471 is about 8967.8019045918. The cubic root of 80421471 is about 431.6423061507.

Adding to 80421471 its reverse (17412408), we get a palindrome (97833879).

The spelling of 80421471 in words is "eighty million, four hundred twenty-one thousand, four hundred seventy-one".