8697409 has 4 divisors (see below), whose sum is σ = 9939904. Its totient is φ = 7454916.

The previous prime is 8697407. The next prime is 8697433. The reversal of 8697409 is 9047968.

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 not a de Polignac number, because 8697409 - 2¹ = 8697407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8697407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621237 + ... + 621250.

It is an arithmetic number, because the mean of its divisors is an integer number (2484976).

Almost surely, 2^8697409 is an apocalyptic number.

It is an amenable number.

8697409 is a deficient number, since it is larger than the sum of its proper divisors (1242495).

8697409 is a wasteful number, since it uses less digits than its factorization.

8697409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242494.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 8697409 is about 2949.1369924098. The cubic root of 8697409 is about 205.6505922144.

The spelling of 8697409 in words is "eight million, six hundred ninety-seven thousand, four hundred nine".