338738389 has 4 divisors (see below), whose sum is σ = 369532800. Its totient is φ = 307943980.

The previous prime is 338738383. The next prime is 338738417. The reversal of 338738389 is 983837833.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 338738389 - 2⁹ = 338737877 is a prime.

It is a super-2 number, since 2×338738389² = 229487392364630642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338738383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15397189 + ... + 15397210.

It is an arithmetic number, because the mean of its divisors is an integer number (92383200).

Almost surely, 2^338738389 is an apocalyptic number.

It is an amenable number.

338738389 is a deficient number, since it is larger than the sum of its proper divisors (30794411).

338738389 is a wasteful number, since it uses less digits than its factorization.

338738389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30794410.

The product of its digits is 2612736, while the sum is 52.

The square root of 338738389 is about 18404.8468887954. The cubic root of 338738389 is about 697.0888548726.

The spelling of 338738389 in words is "three hundred thirty-eight million, seven hundred thirty-eight thousand, three hundred eighty-nine".