74789539 has 4 divisors (see below), whose sum is σ = 81588600. Its totient is φ = 67990480.

The previous prime is 74789531. The next prime is 74789551. The reversal of 74789539 is 93598747.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74789539 - 2³ = 74789531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74789531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3399514 + ... + 3399535.

It is an arithmetic number, because the mean of its divisors is an integer number (20397150).

Almost surely, 2^74789539 is an apocalyptic number.

74789539 is a deficient number, since it is larger than the sum of its proper divisors (6799061).

74789539 is a wasteful number, since it uses less digits than its factorization.

74789539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6799060.

The product of its digits is 1905120, while the sum is 52.

The square root of 74789539 is about 8648.0945300106. The cubic root of 74789539 is about 421.3214971377.

The spelling of 74789539 in words is "seventy-four million, seven hundred eighty-nine thousand, five hundred thirty-nine".