74143789 has 8 divisors (see below), whose sum is σ = 77575680. Its totient is φ = 70729296.

The previous prime is 74143781. The next prime is 74143799. The reversal of 74143789 is 98734147.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74143789 - 2³ = 74143781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74143781) 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 7 ways as a sum of consecutive naturals, for example, 4804 + ... + 13090.

It is an arithmetic number, because the mean of its divisors is an integer number (9696960).

Almost surely, 2^74143789 is an apocalyptic number.

It is an amenable number.

74143789 is a deficient number, since it is larger than the sum of its proper divisors (3431891).

74143789 is a wasteful number, since it uses less digits than its factorization.

74143789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8699.

The product of its digits is 169344, while the sum is 43.

The square root of 74143789 is about 8610.6787769606. The cubic root of 74143789 is about 420.1053949407.

The spelling of 74143789 in words is "seventy-four million, one hundred forty-three thousand, seven hundred eighty-nine".