74317909 has 4 divisors (see below), whose sum is σ = 74707200. Its totient is φ = 73928620.

The previous prime is 74317891. The next prime is 74317927. The reversal of 74317909 is 90971347.

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: 90971347 = 29 ⋅3136943.

It is an interprime number because it is at equal distance from previous prime (74317891) and next prime (74317927).

It is a cyclic number.

It is not a de Polignac number, because 74317909 - 2⁵ = 74317877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74317939) 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, 194359 + ... + 194740.

It is an arithmetic number, because the mean of its divisors is an integer number (18676800).

Almost surely, 2^74317909 is an apocalyptic number.

It is an amenable number.

74317909 is a deficient number, since it is larger than the sum of its proper divisors (389291).

74317909 is a wasteful number, since it uses less digits than its factorization.

74317909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389290.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 74317909 is about 8620.7835490749. The cubic root of 74317909 is about 420.4339977177.

The spelling of 74317909 in words is "seventy-four million, three hundred seventeen thousand, nine hundred nine".