338955389 has 2 divisors, whose sum is σ = 338955390. Its totient is φ = 338955388.

The previous prime is 338955373. The next prime is 338955437. The reversal of 338955389 is 983559833.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 329604025 + 9351364 = 18155^2 + 3058^2 .

It is a cyclic number.

It is not a de Polignac number, because 338955389 - 2⁴ = 338955373 is a prime.

It is a super-2 number, since 2×338955389² = 229781511464282642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 338955389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (338955319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169477694 + 169477695.

It is an arithmetic number, because the mean of its divisors is an integer number (169477695).

Almost surely, 2^338955389 is an apocalyptic number.

It is an amenable number.

338955389 is a deficient number, since it is larger than the sum of its proper divisors (1).

338955389 is an equidigital number, since it uses as much as digits as its factorization.

338955389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3499200, while the sum is 53.

The square root of 338955389 is about 18410.7411311984. The cubic root of 338955389 is about 697.2376776776.

The spelling of 338955389 in words is "three hundred thirty-eight million, nine hundred fifty-five thousand, three hundred eighty-nine".