727427139 has 4 divisors (see below), whose sum is σ = 969902856. Its totient is φ = 484951424.

The previous prime is 727427137. The next prime is 727427159. The reversal of 727427139 is 931724727.

It is a happy number.

727427139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 727427139 - 2¹ = 727427137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 727427139.

It is not an unprimeable number, because it can be changed into a prime (727427137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121237854 + ... + 121237859.

It is an arithmetic number, because the mean of its divisors is an integer number (242475714).

Almost surely, 2^727427139 is an apocalyptic number.

727427139 is a deficient number, since it is larger than the sum of its proper divisors (242475717).

727427139 is a wasteful number, since it uses less digits than its factorization.

727427139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242475716.

The product of its digits is 148176, while the sum is 42.

The square root of 727427139 is about 26970.8572166329. The cubic root of 727427139 is about 899.3522660336.

The spelling of 727427139 in words is "seven hundred twenty-seven million, four hundred twenty-seven thousand, one hundred thirty-nine".