8772409 has 4 divisors (see below), whose sum is σ = 8959104. Its totient is φ = 8585716.

The previous prime is 8772371. The next prime is 8772419. The reversal of 8772409 is 9042778.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9042778 = 2 ⋅4521389.

It is a cyclic number.

It is not a de Polignac number, because 8772409 - 2⁹ = 8771897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8772419) 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, 93277 + ... + 93370.

It is an arithmetic number, because the mean of its divisors is an integer number (2239776).

Almost surely, 2^8772409 is an apocalyptic number.

It is an amenable number.

8772409 is a deficient number, since it is larger than the sum of its proper divisors (186695).

8772409 is a wasteful number, since it uses less digits than its factorization.

8772409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186694.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 8772409 is about 2961.8252818153. The cubic root of 8772409 is about 206.2400271884.

The spelling of 8772409 in words is "eight million, seven hundred seventy-two thousand, four hundred nine".