8414721 has 18 divisors (see below), whose sum is σ = 14139762. Its totient is φ = 4808160.

The previous prime is 8414699. The next prime is 8414723. The reversal of 8414721 is 1274148.

8414721 is nontrivially palindromic in base 2.

It can be written as a sum of positive squares in only one way, i.e., 5934096 + 2480625 = 2436^2 + 1575^2 .

It is not a de Polignac number, because 8414721 - 2⁶ = 8414657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8414723) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9100 + ... + 9981.

Almost surely, 2^8414721 is an apocalyptic number.

It is an amenable number.

8414721 is a deficient number, since it is larger than the sum of its proper divisors (5725041).

8414721 is a wasteful number, since it uses less digits than its factorization.

8414721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19101 (or 19091 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 8414721 is about 2900.8138513183. The cubic root of 8414721 is about 203.3979510356.

Adding to 8414721 its reverse (1274148), we get a palindrome (9688869).

The spelling of 8414721 in words is "eight million, four hundred fourteen thousand, seven hundred twenty-one".