74416809 has 4 divisors (see below), whose sum is σ = 99222416. Its totient is φ = 49611204.

The previous prime is 74416801. The next prime is 74416819. The reversal of 74416809 is 90861447.

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 not a de Polignac number, because 74416809 - 2³ = 74416801 is a prime.

It is a super-2 number, since 2×74416809² = 11075722923484962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74416801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12402799 + ... + 12402804.

It is an arithmetic number, because the mean of its divisors is an integer number (24805604).

Almost surely, 2^74416809 is an apocalyptic number.

It is an amenable number.

74416809 is a deficient number, since it is larger than the sum of its proper divisors (24805607).

74416809 is a wasteful number, since it uses less digits than its factorization.

74416809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24805606.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 74416809 is about 8626.5177794983. The cubic root of 74416809 is about 420.6204152837.

The spelling of 74416809 in words is "seventy-four million, four hundred sixteen thousand, eight hundred nine".