74445539 has 16 divisors (see below), whose sum is σ = 88166400. Its totient is φ = 61512480.

The previous prime is 74445493. The next prime is 74445557. The reversal of 74445539 is 93554447.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74445539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74445496 and 74445505.

It is not an unprimeable number, because it can be changed into a prime (74445589) 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 15 ways as a sum of consecutive naturals, for example, 75242 + ... + 76224.

It is an arithmetic number, because the mean of its divisors is an integer number (5510400).

Almost surely, 2^74445539 is an apocalyptic number.

74445539 is a deficient number, since it is larger than the sum of its proper divisors (13720861).

74445539 is a wasteful number, since it uses less digits than its factorization.

74445539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370.

The product of its digits is 302400, while the sum is 41.

The square root of 74445539 is about 8628.1828330188. The cubic root of 74445539 is about 420.6745377769.

The spelling of 74445539 in words is "seventy-four million, four hundred forty-five thousand, five hundred thirty-nine".