74449809 has 72 divisors (see below), whose sum is σ = 136185920. Its totient is φ = 38257920.

The previous prime is 74449801. The next prime is 74449811. The reversal of 74449809 is 90894447.

It is not a de Polignac number, because 74449809 - 2³ = 74449801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74449801) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1815829 + ... + 1815869.

Almost surely, 2^74449809 is an apocalyptic number.

It is an amenable number.

74449809 is a deficient number, since it is larger than the sum of its proper divisors (61736111).

74449809 is a wasteful number, since it uses less digits than its factorization.

74449809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 74449809 is about 8628.4302743894. The cubic root of 74449809 is about 420.6825805509.

The spelling of 74449809 in words is "seventy-four million, four hundred forty-nine thousand, eight hundred nine".