8729241 has 4 divisors (see below), whose sum is σ = 11638992. Its totient is φ = 5819492.

The previous prime is 8729239. The next prime is 8729243. The reversal of 8729241 is 1429278.

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 an interprime number because it is at equal distance from previous prime (8729239) and next prime (8729243).

It is a cyclic number.

It is not a de Polignac number, because 8729241 - 2¹ = 8729239 is a prime.

8729241 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8729243) 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, 1454871 + ... + 1454876.

It is an arithmetic number, because the mean of its divisors is an integer number (2909748).

Almost surely, 2^8729241 is an apocalyptic number.

It is an amenable number.

8729241 is a deficient number, since it is larger than the sum of its proper divisors (2909751).

8729241 is a wasteful number, since it uses less digits than its factorization.

8729241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909750.

The product of its digits is 8064, while the sum is 33.

The square root of 8729241 is about 2954.5288964571. The cubic root of 8729241 is about 205.9011764030.

The spelling of 8729241 in words is "eight million, seven hundred twenty-nine thousand, two hundred forty-one".