8420471 has 8 divisors (see below), whose sum is σ = 8563104. Its totient is φ = 8279200.

The previous prime is 8420453. The next prime is 8420483. The reversal of 8420471 is 1740248.

8420471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8420471 - 2⁶ = 8420407 is a prime.

It is a super-3 number, since 3×8420471³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8420471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26405 + ... + 26721.

It is an arithmetic number, because the mean of its divisors is an integer number (1070388).

Almost surely, 2^8420471 is an apocalyptic number.

8420471 is a deficient number, since it is larger than the sum of its proper divisors (142633).

8420471 is a wasteful number, since it uses less digits than its factorization.

8420471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 8420471 is about 2901.8047832340. The cubic root of 8420471 is about 203.4442695421. Note that the first 3 decimals are identical.

The spelling of 8420471 in words is "eight million, four hundred twenty thousand, four hundred seventy-one".