338520009 has 16 divisors (see below), whose sum is σ = 456915200. Its totient is φ = 222912000.

The previous prime is 338519981. The next prime is 338520023. The reversal of 338520009 is 900025833.

It is a happy number.

It is not a de Polignac number, because 338520009 - 2¹¹ = 338517961 is a prime.

It is a super-2 number, since 2×338520009² = 229191592986720162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338520029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217767 + ... + 219315.

It is an arithmetic number, because the mean of its divisors is an integer number (28557200).

Almost surely, 2^338520009 is an apocalyptic number.

It is an amenable number.

338520009 is a deficient number, since it is larger than the sum of its proper divisors (118395191).

338520009 is a wasteful number, since it uses less digits than its factorization.

338520009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 338520009 is about 18398.9132559507. The cubic root of 338520009 is about 696.9390214571.

The spelling of 338520009 in words is "three hundred thirty-eight million, five hundred twenty thousand, nine".