7894249 has 4 divisors (see below), whose sum is σ = 8611920. Its totient is φ = 7176580.

The previous prime is 7894247. The next prime is 7894301. The reversal of 7894249 is 9424987.

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 7894249 - 2¹ = 7894247 is a prime.

It is a d-powerful number, because it can be written as 7⁵ + 8⁷ + 9⁴ + 4¹⁰ + 2¹⁹ + 4¹¹ + 9⁴ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7894247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358819 + ... + 358840.

It is an arithmetic number, because the mean of its divisors is an integer number (2152980).

Almost surely, 2^7894249 is an apocalyptic number.

It is an amenable number.

7894249 is a deficient number, since it is larger than the sum of its proper divisors (717671).

7894249 is a wasteful number, since it uses less digits than its factorization.

7894249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717670.

The product of its digits is 145152, while the sum is 43.

The square root of 7894249 is about 2809.6706212651. The cubic root of 7894249 is about 199.1148298150.

The spelling of 7894249 in words is "seven million, eight hundred ninety-four thousand, two hundred forty-nine".