8215441 has 8 divisors (see below), whose sum is σ = 8936424. Its totient is φ = 7507200.

The previous prime is 8215411. The next prime is 8215453. The reversal of 8215441 is 1445128.

It can be written as a sum of positive squares in 4 ways, for example, as 4494400 + 3721041 = 2120^2 + 1929^2 .

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 8215441 - 2⁷ = 8215313 is a prime.

It is a super-3 number, since 3×8215441³ (a number of 22 digits) contains 333 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 (8215411) 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, 1816 + ... + 4441.

It is an arithmetic number, because the mean of its divisors is an integer number (1117053).

Almost surely, 2^8215441 is an apocalyptic number.

It is an amenable number.

8215441 is a deficient number, since it is larger than the sum of its proper divisors (720983).

8215441 is a wasteful number, since it uses less digits than its factorization.

8215441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6371.

The product of its digits is 1280, while the sum is 25.

The square root of 8215441 is about 2866.2590601688. The cubic root of 8215441 is about 201.7794622813.

The spelling of 8215441 in words is "eight million, two hundred fifteen thousand, four hundred forty-one".