74943994 has 4 divisors (see below), whose sum is σ = 112415994. Its totient is φ = 37471996.

The previous prime is 74943971. The next prime is 74944003. The reversal of 74943994 is 49934947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49934947 = 1487 ⋅33581.

It can be written as a sum of positive squares in only one way, i.e., 74909025 + 34969 = 8655^2 + 187^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 as a sum of consecutive naturals, namely, 18735997 + ... + 18736000.

Almost surely, 2^74943994 is an apocalyptic number.

74943994 is a deficient number, since it is larger than the sum of its proper divisors (37472000).

74943994 is a wasteful number, since it uses less digits than its factorization.

74943994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37471999.

The product of its digits is 979776, while the sum is 49.

The square root of 74943994 is about 8657.0199260485. The cubic root of 74943994 is about 421.6113347557.

The spelling of 74943994 in words is "seventy-four million, nine hundred forty-three thousand, nine hundred ninety-four".