338887121 has 2 divisors, whose sum is σ = 338887122. Its totient is φ = 338887120.

The previous prime is 338887117. The next prime is 338887183. The reversal of 338887121 is 121788833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217887121 + 121000000 = 14761^2 + 11000^2 .

It is a cyclic number.

It is not a de Polignac number, because 338887121 - 2² = 338887117 is a prime.

It is a super-2 number, since 2×338887121² = 229688961559337282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338887321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169443560 + 169443561.

It is an arithmetic number, because the mean of its divisors is an integer number (169443561).

Almost surely, 2^338887121 is an apocalyptic number.

It is an amenable number.

338887121 is a deficient number, since it is larger than the sum of its proper divisors (1).

338887121 is an equidigital number, since it uses as much as digits as its factorization.

338887121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 41.

The square root of 338887121 is about 18408.8870114410. The cubic root of 338887121 is about 697.1908650101.

It can be divided in two parts, 3388 and 87121, that added together give a palindrome (90509).

The spelling of 338887121 in words is "three hundred thirty-eight million, eight hundred eighty-seven thousand, one hundred twenty-one".