74494239 has 8 divisors (see below), whose sum is σ = 99398400. Its totient is φ = 49626456.

The previous prime is 74494229. The next prime is 74494241. The reversal of 74494239 is 93249447.

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

It is not a de Polignac number, because 74494239 - 2⁴ = 74494223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74494239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74494229) 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, 3889 + ... + 12810.

It is an arithmetic number, because the mean of its divisors is an integer number (12424800).

Almost surely, 2^74494239 is an apocalyptic number.

74494239 is a deficient number, since it is larger than the sum of its proper divisors (24904161).

74494239 is a wasteful number, since it uses less digits than its factorization.

74494239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18189.

The product of its digits is 217728, while the sum is 42.

The square root of 74494239 is about 8631.0045185946. The cubic root of 74494239 is about 420.7662485971.

The spelling of 74494239 in words is "seventy-four million, four hundred ninety-four thousand, two hundred thirty-nine".