338904889 has 2 divisors, whose sum is σ = 338904890. Its totient is φ = 338904888.

The previous prime is 338904883. The next prime is 338904899. The reversal of 338904889 is 988409833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210830400 + 128074489 = 14520^2 + 11317^2 .

It is an emirp because it is prime and its reverse (988409833) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 338904889 - 2⁵ = 338904857 is a prime.

It is a super-2 number, since 2×338904889² = 229713047576204642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338904883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169452444 + 169452445.

It is an arithmetic number, because the mean of its divisors is an integer number (169452445).

Almost surely, 2^338904889 is an apocalyptic number.

It is an amenable number.

338904889 is a deficient number, since it is larger than the sum of its proper divisors (1).

338904889 is an equidigital number, since it uses as much as digits as its factorization.

338904889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 338904889 is about 18409.3695981150. The cubic root of 338904889 is about 697.2030494712.

The spelling of 338904889 in words is "three hundred thirty-eight million, nine hundred four thousand, eight hundred eighty-nine".