338139745 has 16 divisors (see below), whose sum is σ = 417650112. Its totient is φ = 262664640.

The previous prime is 338139743. The next prime is 338139749. The reversal of 338139745 is 547931833.

It is a happy number.

It is not a de Polignac number, because 338139745 - 2¹ = 338139743 is a prime.

It is a super-2 number, since 2×338139745² = 228676974297330050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338139743) 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 in 15 ways as a sum of consecutive naturals, for example, 32650 + ... + 41740.

It is an arithmetic number, because the mean of its divisors is an integer number (26103132).

Almost surely, 2^338139745 is an apocalyptic number.

It is an amenable number.

338139745 is a deficient number, since it is larger than the sum of its proper divisors (79510367).

338139745 is a wasteful number, since it uses less digits than its factorization.

338139745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9312.

The product of its digits is 272160, while the sum is 43.

The square root of 338139745 is about 18388.5764810656. The cubic root of 338139745 is about 696.6779634115.

The spelling of 338139745 in words is "three hundred thirty-eight million, one hundred thirty-nine thousand, seven hundred forty-five".