8460021 has 8 divisors (see below), whose sum is σ = 11770560. Its totient is φ = 5394752.

The previous prime is 8460017. The next prime is 8460041. The reversal of 8460021 is 1200648.

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 8460021 - 2² = 8460017 is a prime.

8460021 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8460021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8460041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61236 + ... + 61373.

It is an arithmetic number, because the mean of its divisors is an integer number (1471320).

Almost surely, 2^8460021 is an apocalyptic number.

It is an amenable number.

8460021 is a deficient number, since it is larger than the sum of its proper divisors (3310539).

8460021 is a wasteful number, since it uses less digits than its factorization.

8460021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122635.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 8460021 is about 2908.6115244219. The cubic root of 8460021 is about 203.7622903999.

Adding to 8460021 its reverse (1200648), we get a palindrome (9660669).

The spelling of 8460021 in words is "eight million, four hundred sixty thousand, twenty-one".