338479993 has 2 divisors, whose sum is σ = 338479994. Its totient is φ = 338479992.

The previous prime is 338479963. The next prime is 338480017. The reversal of 338479993 is 399974833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186377104 + 152102889 = 13652^2 + 12333^2 .

It is a cyclic number.

It is not a de Polignac number, because 338479993 - 2⁹ = 338479481 is a prime.

It is a super-2 number, since 2×338479993² = 229137411322560098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338479943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169239996 + 169239997.

It is an arithmetic number, because the mean of its divisors is an integer number (169239997).

Almost surely, 2^338479993 is an apocalyptic number.

It is an amenable number.

338479993 is a deficient number, since it is larger than the sum of its proper divisors (1).

338479993 is an equidigital number, since it uses as much as digits as its factorization.

338479993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 55.

The square root of 338479993 is about 18397.8257682803. The cubic root of 338479993 is about 696.9115589633.

The spelling of 338479993 in words is "three hundred thirty-eight million, four hundred seventy-nine thousand, nine hundred ninety-three".