8780949 has 6 divisors (see below), whose sum is σ = 12683606. Its totient is φ = 5853960.

The previous prime is 8780923. The next prime is 8780977. The reversal of 8780949 is 9490878.

It can be written as a sum of positive squares in only one way, i.e., 7800849 + 980100 = 2793^2 + 990^2 .

It is not a de Polignac number, because 8780949 - 2¹¹ = 8778901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8780909) 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 5 ways as a sum of consecutive naturals, for example, 487822 + ... + 487839.

Almost surely, 2^8780949 is an apocalyptic number.

It is an amenable number.

8780949 is a deficient number, since it is larger than the sum of its proper divisors (3902657).

8780949 is a wasteful number, since it uses less digits than its factorization.

8780949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975667 (or 975664 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 8780949 is about 2963.2666096725. The cubic root of 8780949 is about 206.3069308405.

The spelling of 8780949 in words is "eight million, seven hundred eighty thousand, nine hundred forty-nine".