74534909 has 4 divisors (see below), whose sum is σ = 76549404. Its totient is φ = 72520416.

The previous prime is 74534899. The next prime is 74534917. The reversal of 74534909 is 90943547.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47265625 + 27269284 = 6875^2 + 5222^2 .

It is a cyclic number.

It is not a de Polignac number, because 74534909 - 2⁴ = 74534893 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 (74530909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1007192 + ... + 1007265.

It is an arithmetic number, because the mean of its divisors is an integer number (19137351).

Almost surely, 2^74534909 is an apocalyptic number.

It is an amenable number.

74534909 is a deficient number, since it is larger than the sum of its proper divisors (2014495).

74534909 is a wasteful number, since it uses less digits than its factorization.

74534909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014494.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 74534909 is about 8633.3602380533. The cubic root of 74534909 is about 420.8428068667.

The spelling of 74534909 in words is "seventy-four million, five hundred thirty-four thousand, nine hundred nine".