226139 has 4 divisors (see below), whose sum is σ = 228480. Its totient is φ = 223800.

The previous prime is 226133. The next prime is 226141. The reversal of 226139 is 931622.

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 226139 - 2⁴ = 226123 is a prime.

It is a super-2 number, since 2×226139² = 102277694642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226133) 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, 1019 + ... + 1220.

It is an arithmetic number, because the mean of its divisors is an integer number (57120).

2²²⁶¹³⁹ is an apocalyptic number.

226139 is a deficient number, since it is larger than the sum of its proper divisors (2341).

226139 is a wasteful number, since it uses less digits than its factorization.

226139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340.

The product of its digits is 648, while the sum is 23.

The square root of 226139 is about 475.5407448369. The cubic root of 226139 is about 60.9244787869.

It can be divided in two parts, 22613 and 9, that added together give a palindrome (22622).

The spelling of 226139 in words is "two hundred twenty-six thousand, one hundred thirty-nine".