74399518 has 8 divisors (see below), whose sum is σ = 111739320. Its totient is φ = 37153080.

The previous prime is 74399491. The next prime is 74399537. The reversal of 74399518 is 81599347.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21313 + ... + 24556.

It is an arithmetic number, because the mean of its divisors is an integer number (13967415).

Almost surely, 2^74399518 is an apocalyptic number.

74399518 is a deficient number, since it is larger than the sum of its proper divisors (37339802).

74399518 is a wasteful number, since it uses less digits than its factorization.

74399518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46682.

The product of its digits is 272160, while the sum is 46.

The square root of 74399518 is about 8625.5155208254. The cubic root of 74399518 is about 420.5878352297.

The spelling of 74399518 in words is "seventy-four million, three hundred ninety-nine thousand, five hundred eighteen".