8417874521 has 4 divisors (see below), whose sum is σ = 9620428032. Its totient is φ = 7215321012.

The previous prime is 8417874499. The next prime is 8417874527. The reversal of 8417874521 is 1254787148.

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 a cyclic number.

It is not a de Polignac number, because 8417874521 - 2¹⁸ = 8417612377 is a prime.

It is a super-2 number, since 2×8417874521² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8417874527) 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, 601276745 + ... + 601276758.

It is an arithmetic number, because the mean of its divisors is an integer number (2405107008).

Almost surely, 2^8417874521 is an apocalyptic number.

It is an amenable number.

8417874521 is a deficient number, since it is larger than the sum of its proper divisors (1202553511).

8417874521 is a wasteful number, since it uses less digits than its factorization.

8417874521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202553510.

The product of its digits is 501760, while the sum is 47.

The square root of 8417874521 is about 91748.9755855617. The cubic root of 8417874521 is about 2034.2335649665.

The spelling of 8417874521 in words is "eight billion, four hundred seventeen million, eight hundred seventy-four thousand, five hundred twenty-one".