7980549 has 4 divisors (see below), whose sum is σ = 10640736. Its totient is φ = 5320364.

The previous prime is 7980529. The next prime is 7980587. The reversal of 7980549 is 9450897.

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 7980549 - 2¹³ = 7972357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7980549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7980509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1330089 + ... + 1330094.

It is an arithmetic number, because the mean of its divisors is an integer number (2660184).

Almost surely, 2^7980549 is an apocalyptic number.

It is an amenable number.

7980549 is a deficient number, since it is larger than the sum of its proper divisors (2660187).

7980549 is a wasteful number, since it uses less digits than its factorization.

7980549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660186.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 7980549 is about 2824.9865486405. The cubic root of 7980549 is about 199.8377767871.

The spelling of 7980549 in words is "seven million, nine hundred eighty thousand, five hundred forty-nine".