74943489 has 4 divisors (see below), whose sum is σ = 99924656. Its totient is φ = 49962324.

The previous prime is 74943487. The next prime is 74943503. The reversal of 74943489 is 98434947.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 74943489 - 2¹ = 74943487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74943487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12490579 + ... + 12490584.

It is an arithmetic number, because the mean of its divisors is an integer number (24981164).

Almost surely, 2^74943489 is an apocalyptic number.

It is an amenable number.

74943489 is a deficient number, since it is larger than the sum of its proper divisors (24981167).

74943489 is a wasteful number, since it uses less digits than its factorization.

74943489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24981166.

The product of its digits is 870912, while the sum is 48.

The square root of 74943489 is about 8656.9907589185. The cubic root of 74943489 is about 421.6103877632.

The spelling of 74943489 in words is "seventy-four million, nine hundred forty-three thousand, four hundred eighty-nine".