7271139 has 8 divisors (see below), whose sum is σ = 9854032. Its totient is φ = 4767840.

The previous prime is 7271137. The next prime is 7271177. The reversal of 7271139 is 9311727.

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

It is not a de Polignac number, because 7271139 - 2¹ = 7271137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7271137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19684 + ... + 20049.

It is an arithmetic number, because the mean of its divisors is an integer number (1231754).

Almost surely, 2^7271139 is an apocalyptic number.

7271139 is a deficient number, since it is larger than the sum of its proper divisors (2582893).

7271139 is a wasteful number, since it uses less digits than its factorization.

7271139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39797.

The product of its digits is 2646, while the sum is 30.

The square root of 7271139 is about 2696.5049601289. The cubic root of 7271139 is about 193.7317563120.

The spelling of 7271139 in words is "seven million, two hundred seventy-one thousand, one hundred thirty-nine".