74139727 has 8 divisors (see below), whose sum is σ = 75902976. Its totient is φ = 72384312.

The previous prime is 74139707. The next prime is 74139731. The reversal of 74139727 is 72793147.

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

It is a cyclic number.

It is not a de Polignac number, because 74139727 - 2¹⁵ = 74106959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74139727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74139707) 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, 20058 + ... + 23464.

It is an arithmetic number, because the mean of its divisors is an integer number (9487872).

Almost surely, 2^74139727 is an apocalyptic number.

74139727 is a deficient number, since it is larger than the sum of its proper divisors (1763249).

74139727 is a wasteful number, since it uses less digits than its factorization.

74139727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917.

The product of its digits is 74088, while the sum is 40.

The square root of 74139727 is about 8610.4429038232. The cubic root of 74139727 is about 420.0977229145.

The spelling of 74139727 in words is "seventy-four million, one hundred thirty-nine thousand, seven hundred twenty-seven".