74404409 has 4 divisors (see below), whose sum is σ = 74438016. Its totient is φ = 74370804.

The previous prime is 74404403. The next prime is 74404417. The reversal of 74404409 is 90440447.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90440447 = 2357 ⋅38371.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74404409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74404403) 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, 13229 + ... + 17994.

It is an arithmetic number, because the mean of its divisors is an integer number (18609504).

Almost surely, 2^74404409 is an apocalyptic number.

It is an amenable number.

74404409 is a deficient number, since it is larger than the sum of its proper divisors (33607).

74404409 is a wasteful number, since it uses less digits than its factorization.

74404409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33606.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 74404409 is about 8625.7990354517. The cubic root of 74404409 is about 420.5970514633.

The spelling of 74404409 in words is "seventy-four million, four hundred four thousand, four hundred nine".