74355309 has 12 divisors (see below), whose sum is σ = 122745376. Its totient is φ = 42488712.

The previous prime is 74355293. The next prime is 74355313. The reversal of 74355309 is 90355347.

It is not a de Polignac number, because 74355309 - 2⁴ = 74355293 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 (74355349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 590059 + ... + 590184.

Almost surely, 2^74355309 is an apocalyptic number.

It is an amenable number.

74355309 is a deficient number, since it is larger than the sum of its proper divisors (48390067).

74355309 is a wasteful number, since it uses less digits than its factorization.

74355309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180256 (or 1180253 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The square root of 74355309 is about 8622.9524526116. The cubic root of 74355309 is about 420.5045127737.

The spelling of 74355309 in words is "seventy-four million, three hundred fifty-five thousand, three hundred nine".