74936909 has 8 divisors (see below), whose sum is σ = 76127352. Its totient is φ = 73751040.

The previous prime is 74936891. The next prime is 74936923. The reversal of 74936909 is 90963947.

It can be written as a sum of positive squares in 4 ways, for example, as 8970025 + 65966884 = 2995^2 + 8122^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74936909 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 (74936999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47477 + ... + 49029.

It is an arithmetic number, because the mean of its divisors is an integer number (9515919).

Almost surely, 2^74936909 is an apocalyptic number.

It is an amenable number.

74936909 is a deficient number, since it is larger than the sum of its proper divisors (1190443).

74936909 is a wasteful number, since it uses less digits than its factorization.

74936909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 74936909 is about 8656.6107108960. The cubic root of 74936909 is about 421.5980483433.

The spelling of 74936909 in words is "seventy-four million, nine hundred thirty-six thousand, nine hundred nine".