7040409 has 4 divisors (see below), whose sum is σ = 9387216. Its totient is φ = 4693604.

The previous prime is 7040389. The next prime is 7040413. The reversal of 7040409 is 9040407.

7040409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7040409 - 2⁷ = 7040281 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7040009) 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, 1173399 + ... + 1173404.

It is an arithmetic number, because the mean of its divisors is an integer number (2346804).

Almost surely, 2^7040409 is an apocalyptic number.

It is an amenable number.

7040409 is a deficient number, since it is larger than the sum of its proper divisors (2346807).

7040409 is a wasteful number, since it uses less digits than its factorization.

7040409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346806.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 7040409 is about 2653.3769050024. The cubic root of 7040409 is about 191.6605057461.

The spelling of 7040409 in words is "seven million, forty thousand, four hundred nine".