74518889 has 4 divisors (see below), whose sum is σ = 74601600. Its totient is φ = 74436180.

The previous prime is 74518861. The next prime is 74518891. The reversal of 74518889 is 98881547.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98881547 = 457 ⋅216371.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74518889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74518819) 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, 39989 + ... + 41810.

It is an arithmetic number, because the mean of its divisors is an integer number (18650400).

Almost surely, 2^74518889 is an apocalyptic number.

It is an amenable number.

74518889 is a deficient number, since it is larger than the sum of its proper divisors (82711).

74518889 is an equidigital number, since it uses as much as digits as its factorization.

74518889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82710.

The product of its digits is 645120, while the sum is 50.

The square root of 74518889 is about 8632.4323918580. The cubic root of 74518889 is about 420.8126537257.

The spelling of 74518889 in words is "seventy-four million, five hundred eighteen thousand, eight hundred eighty-nine".