7480409 has 8 divisors (see below), whose sum is σ = 7842912. Its totient is φ = 7126560.

The previous prime is 7480397. The next prime is 7480411. The reversal of 7480409 is 9040847.

7480409 = T₁₀₀ + T₁₀₁ + ... + T₃₅₇.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7480409 - 2²⁰ = 6431833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7480909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359 + ... + 3884.

It is an arithmetic number, because the mean of its divisors is an integer number (980364).

Almost surely, 2^7480409 is an apocalyptic number.

It is an amenable number.

7480409 is a deficient number, since it is larger than the sum of its proper divisors (362503).

7480409 is a wasteful number, since it uses less digits than its factorization.

7480409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4327.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 7480409 is about 2735.0336378187. The cubic root of 7480409 is about 195.5727975046.

The spelling of 7480409 in words is "seven million, four hundred eighty thousand, four hundred nine".