74189999 has 8 divisors (see below), whose sum is σ = 80473680. Its totient is φ = 67988736.

The previous prime is 74189993. The next prime is 74190013. The reversal of 74189999 is 99998147.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74189999 is a prime.

It is a Duffinian number.

74189999 is a modest number, since divided by 9999 gives 7418 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74189993) 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, 18722 + ... + 22335.

It is an arithmetic number, because the mean of its divisors is an integer number (10059210).

Almost surely, 2^74189999 is an apocalyptic number.

74189999 is a deficient number, since it is larger than the sum of its proper divisors (6283681).

74189999 is a wasteful number, since it uses less digits than its factorization.

74189999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41209.

The product of its digits is 1469664, while the sum is 56.

The square root of 74189999 is about 8613.3616550102. The cubic root of 74189999 is about 420.1926534911.

The spelling of 74189999 in words is "seventy-four million, one hundred eighty-nine thousand, nine hundred ninety-nine".