74045409 has 4 divisors (see below), whose sum is σ = 98727216. Its totient is φ = 49363604.

The previous prime is 74045393. The next prime is 74045429. The reversal of 74045409 is 90454047.

It is a happy number.

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 74045409 - 2⁴ = 74045393 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74045409.

It is not an unprimeable number, because it can be changed into a prime (74045429) 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, 12340899 + ... + 12340904.

It is an arithmetic number, because the mean of its divisors is an integer number (24681804).

Almost surely, 2^74045409 is an apocalyptic number.

It is an amenable number.

74045409 is a deficient number, since it is larger than the sum of its proper divisors (24681807).

74045409 is a wasteful number, since it uses less digits than its factorization.

74045409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24681806.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 74045409 is about 8604.9642067820. The cubic root of 74045409 is about 419.9195027134.

The spelling of 74045409 in words is "seventy-four million, forty-five thousand, four hundred nine".