8379521 has 16 divisors (see below), whose sum is σ = 9590400. Its totient is φ = 7273728.

The previous prime is 8379499. The next prime is 8379529. The reversal of 8379521 is 1259738.

It is a cyclic number.

It is not a de Polignac number, because 8379521 - 2¹⁸ = 8117377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8379529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10970 + ... + 11708.

It is an arithmetic number, because the mean of its divisors is an integer number (599400).

Almost surely, 2^8379521 is an apocalyptic number.

It is an amenable number.

8379521 is a deficient number, since it is larger than the sum of its proper divisors (1210879).

8379521 is a wasteful number, since it uses less digits than its factorization.

8379521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808.

The product of its digits is 15120, while the sum is 35.

The square root of 8379521 is about 2894.7402301416. The cubic root of 8379521 is about 203.1139402578.

The spelling of 8379521 in words is "eight million, three hundred seventy-nine thousand, five hundred twenty-one".