9040409 has 16 divisors (see below), whose sum is σ = 10999680. Its totient is φ = 7257600.

The previous prime is 9040399. The next prime is 9040411.

9040409 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9040409 - 2⁸ = 9040153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9040429) 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 15 ways as a sum of consecutive naturals, for example, 13097 + ... + 13769.

It is an arithmetic number, because the mean of its divisors is an integer number (687480).

Almost surely, 2^9040409 is an apocalyptic number.

It is an amenable number.

9040409 is a deficient number, since it is larger than the sum of its proper divisors (1959271).

9040409 is a wasteful number, since it uses less digits than its factorization.

9040409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 9040409 is about 3006.7272905935. The cubic root of 9040409 is about 208.3192290540.

It can be divided in two parts, 9040 and 409, that added together give a palindrome (9449).

The spelling of 9040409 in words is "nine million, forty thousand, four hundred nine".