8285421 has 8 divisors (see below), whose sum is σ = 11212384. Its totient is φ = 5441040.

The previous prime is 8285411. The next prime is 8285461. The reversal of 8285421 is 1245828.

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

It is not a de Polignac number, because 8285421 - 2⁷ = 8285293 is a prime.

It is a super-2 number, since 2×8285421² = 137296402294482, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8285411) 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, 20410 + ... + 20811.

It is an arithmetic number, because the mean of its divisors is an integer number (1401548).

Almost surely, 2^8285421 is an apocalyptic number.

It is an amenable number.

8285421 is a deficient number, since it is larger than the sum of its proper divisors (2926963).

8285421 is a wasteful number, since it uses less digits than its factorization.

8285421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41291.

The product of its digits is 5120, while the sum is 30.

The square root of 8285421 is about 2878.4407237253. The cubic root of 8285421 is about 202.3507694921.

The spelling of 8285421 in words is "eight million, two hundred eighty-five thousand, four hundred twenty-one".