74084309 has 8 divisors (see below), whose sum is σ = 80246712. Its totient is φ = 67988160.

The previous prime is 74084303. The next prime is 74084321. The reversal of 74084309 is 90348047.

It can be written as a sum of positive squares in 4 ways, for example, as 28143025 + 45941284 = 5305^2 + 6778^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 74084309 - 2¹² = 74080213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74084303) 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, 14222 + ... + 18719.

It is an arithmetic number, because the mean of its divisors is an integer number (10030839).

Almost surely, 2^74084309 is an apocalyptic number.

It is an amenable number.

74084309 is a deficient number, since it is larger than the sum of its proper divisors (6162403).

74084309 is a wasteful number, since it uses less digits than its factorization.

74084309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33127.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 74084309 is about 8607.2242331660. The cubic root of 74084309 is about 419.9930252054.

The spelling of 74084309 in words is "seventy-four million, eighty-four thousand, three hundred nine".