224395709 has 2 divisors, whose sum is σ = 224395710. Its totient is φ = 224395708.

The previous prime is 224395687. The next prime is 224395723. The reversal of 224395709 is 907593422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224340484 + 55225 = 14978^2 + 235^2 .

It is a cyclic number.

It is not a de Polignac number, because 224395709 - 2¹² = 224391613 is a prime.

It is a super-2 number, since 2×224395709² = 100706868435225362, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224395109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112197854 + 112197855.

It is an arithmetic number, because the mean of its divisors is an integer number (112197855).

Almost surely, 2^224395709 is an apocalyptic number.

It is an amenable number.

224395709 is a deficient number, since it is larger than the sum of its proper divisors (1).

224395709 is an equidigital number, since it uses as much as digits as its factorization.

224395709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 224395709 is about 14979.8434237478. The cubic root of 224395709 is about 607.6752047056.

The spelling of 224395709 in words is "two hundred twenty-four million, three hundred ninety-five thousand, seven hundred nine".