338866729 has 12 divisors (see below), whose sum is σ = 378685044. Its totient is φ = 302141952.

The previous prime is 338866727. The next prime is 338866793. The reversal of 338866729 is 927668833.

It can be written as a sum of positive squares in 2 ways, for example, as 245705625 + 93161104 = 15675^2 + 9652^2 .

It is not a de Polignac number, because 338866729 - 2¹ = 338866727 is a prime.

It is a super-2 number, since 2×338866729² = 229661320046318882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338866727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21472 + ... + 33745.

It is an arithmetic number, because the mean of its divisors is an integer number (31557087).

Almost surely, 2^338866729 is an apocalyptic number.

It is an amenable number.

338866729 is a deficient number, since it is larger than the sum of its proper divisors (39818315).

338866729 is a wasteful number, since it uses less digits than its factorization.

338866729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55272 (or 55253 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 52.

The square root of 338866729 is about 18408.3331401841. Note that the first 3 decimals coincide. The cubic root of 338866729 is about 697.1768806080.

The spelling of 338866729 in words is "three hundred thirty-eight million, eight hundred sixty-six thousand, seven hundred twenty-nine".