4338220729 has 4 divisors (see below), whose sum is σ = 4338397476. Its totient is φ = 4338043984.

The previous prime is 4338220727. The next prime is 4338220787. The reversal of 4338220729 is 9270228334.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3349747129 + 988473600 = 57877^2 + 31440^2 .

It is a cyclic number.

It is not a de Polignac number, because 4338220729 - 2¹ = 4338220727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4338220691 and 4338220700.

It is not an unprimeable number, because it can be changed into a prime (4338220727) 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, 44194 + ... + 103099.

It is an arithmetic number, because the mean of its divisors is an integer number (1084599369).

Almost surely, 2^4338220729 is an apocalyptic number.

It is an amenable number.

4338220729 is a deficient number, since it is larger than the sum of its proper divisors (176747).

4338220729 is a wasteful number, since it uses less digits than its factorization.

4338220729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176746.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 4338220729 is about 65865.1708340607. The cubic root of 4338220729 is about 1630.9371114065.

The spelling of 4338220729 in words is "four billion, three hundred thirty-eight million, two hundred twenty thousand, seven hundred twenty-nine".