8707409 has 4 divisors (see below), whose sum is σ = 9086016. Its totient is φ = 8328804.

The previous prime is 8707393. The next prime is 8707421. The reversal of 8707409 is 9047078.

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 8707409 - 2⁴ = 8707393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8707429) 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, 189269 + ... + 189314.

It is an arithmetic number, because the mean of its divisors is an integer number (2271504).

Almost surely, 2^8707409 is an apocalyptic number.

It is an amenable number.

8707409 is a deficient number, since it is larger than the sum of its proper divisors (378607).

8707409 is a wasteful number, since it uses less digits than its factorization.

8707409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378606.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 8707409 is about 2950.8319165957. The cubic root of 8707409 is about 205.7293788300.

The spelling of 8707409 in words is "eight million, seven hundred seven thousand, four hundred nine".