8909407 has 4 divisors (see below), whose sum is σ = 9594760. Its totient is φ = 8224056.

The previous prime is 8909401. The next prime is 8909437. The reversal of 8909407 is 7049098.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8909407 - 2¹¹ = 8907359 is a prime.

It is a Duffinian number.

8909407 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8909401) 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, 342657 + ... + 342682.

It is an arithmetic number, because the mean of its divisors is an integer number (2398690).

Almost surely, 2^8909407 is an apocalyptic number.

8909407 is a deficient number, since it is larger than the sum of its proper divisors (685353).

8909407 is a wasteful number, since it uses less digits than its factorization.

8909407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685352.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 8909407 is about 2984.8629784297. The cubic root of 8909407 is about 207.3080976053.

It can be divided in two parts, 8909 and 407, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 8909407 in words is "eight million, nine hundred nine thousand, four hundred seven".