224478139 has 4 divisors (see below), whose sum is σ = 227553256. Its totient is φ = 221403024.

The previous prime is 224478113. The next prime is 224478167. The reversal of 224478139 is 931874422.

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 224478139 - 2⁷ = 224478011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224479139) 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, 1537449 + ... + 1537594.

It is an arithmetic number, because the mean of its divisors is an integer number (56888314).

Almost surely, 2^224478139 is an apocalyptic number.

224478139 is a deficient number, since it is larger than the sum of its proper divisors (3075117).

224478139 is an equidigital number, since it uses as much as digits as its factorization.

224478139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075116.

The product of its digits is 96768, while the sum is 40.

The square root of 224478139 is about 14982.5945349929. The cubic root of 224478139 is about 607.7496038331.

The spelling of 224478139 in words is "two hundred twenty-four million, four hundred seventy-eight thousand, one hundred thirty-nine".