8392521 has 4 divisors (see below), whose sum is σ = 11190032. Its totient is φ = 5595012.

The previous prime is 8392519. The next prime is 8392561. The reversal of 8392521 is 1252938.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8392521 - 2¹ = 8392519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8392511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1398751 + ... + 1398756.

It is an arithmetic number, because the mean of its divisors is an integer number (2797508).

Almost surely, 2^8392521 is an apocalyptic number.

It is an amenable number.

8392521 is a deficient number, since it is larger than the sum of its proper divisors (2797511).

8392521 is a wasteful number, since it uses less digits than its factorization.

8392521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2797510.

The product of its digits is 4320, while the sum is 30.

The square root of 8392521 is about 2896.9848118345. The cubic root of 8392521 is about 203.2189230652.

The spelling of 8392521 in words is "eight million, three hundred ninety-two thousand, five hundred twenty-one".