224138739 has 8 divisors (see below), whose sum is σ = 326020032. Its totient is φ = 135841640.

The previous prime is 224138731. The next prime is 224138753. The reversal of 224138739 is 937831422.

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

It is not a de Polignac number, because 224138739 - 2³ = 224138731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 224138697 and 224138706.

It is not an unprimeable number, because it can be changed into a prime (224138731) 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, 3396009 + ... + 3396074.

It is an arithmetic number, because the mean of its divisors is an integer number (40752504).

Almost surely, 2^224138739 is an apocalyptic number.

224138739 is a deficient number, since it is larger than the sum of its proper divisors (101881293).

224138739 is a wasteful number, since it uses less digits than its factorization.

224138739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6792097.

The product of its digits is 72576, while the sum is 39.

The square root of 224138739 is about 14971.2637743111. The cubic root of 224138739 is about 607.4431534133.

The spelling of 224138739 in words is "two hundred twenty-four million, one hundred thirty-eight thousand, seven hundred thirty-nine".