7223139 has 36 divisors (see below), whose sum is σ = 13249080. Its totient is φ = 3749760.

The previous prime is 7223137. The next prime is 7223143. The reversal of 7223139 is 9313227.

It is not a de Polignac number, because 7223139 - 2¹ = 7223137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7223137) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4107 + ... + 5595.

It is an arithmetic number, because the mean of its divisors is an integer number (368030).

Almost surely, 2^7223139 is an apocalyptic number.

7223139 is a deficient number, since it is larger than the sum of its proper divisors (6025941).

7223139 is a wasteful number, since it uses less digits than its factorization.

7223139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 1510 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 7223139 is about 2687.5898124528. The cubic root of 7223139 is about 193.3045118220.

The spelling of 7223139 in words is "seven million, two hundred twenty-three thousand, one hundred thirty-nine".