74399998 has 4 divisors (see below), whose sum is σ = 111600000. Its totient is φ = 37199998.

The previous prime is 74399959. The next prime is 74399999. The reversal of 74399998 is 89999347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89999347 = 1223 ⋅73589.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74399999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18599998 + ... + 18600001.

It is an arithmetic number, because the mean of its divisors is an integer number (27900000).

Almost surely, 2^74399998 is an apocalyptic number.

74399998 is a deficient number, since it is larger than the sum of its proper divisors (37200002).

74399998 is a wasteful number, since it uses less digits than its factorization.

74399998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37200001.

The product of its digits is 4408992, while the sum is 58.

The square root of 74399998 is about 8625.5433452044. The cubic root of 74399998 is about 420.5887397236.

The spelling of 74399998 in words is "seventy-four million, three hundred ninety-nine thousand, nine hundred ninety-eight".