74087329 has 4 divisors (see below), whose sum is σ = 74132100. Its totient is φ = 74042560.

The previous prime is 74087317. The next prime is 74087333. The reversal of 74087329 is 92378047.

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 61591104 + 12496225 = 7848^2 + 3535^2 .

It is a cyclic number.

It is not a de Polignac number, because 74087329 - 2⁵ = 74087297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74087291 and 74087300.

It is not an unprimeable number, because it can be changed into a prime (74087359) 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, 19804 + ... + 23245.

It is an arithmetic number, because the mean of its divisors is an integer number (18533025).

Almost surely, 2^74087329 is an apocalyptic number.

It is an amenable number.

74087329 is a deficient number, since it is larger than the sum of its proper divisors (44771).

74087329 is a wasteful number, since it uses less digits than its factorization.

74087329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44770.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 74087329 is about 8607.3996654042. The cubic root of 74087329 is about 419.9987320445.

The spelling of 74087329 in words is "seventy-four million, eighty-seven thousand, three hundred twenty-nine".