338939478 has 40 divisors (see below), whose sum is σ = 762262248. Its totient is φ = 112565376.

The previous prime is 338939417. The next prime is 338939479. The reversal of 338939478 is 874939833.

It is a super-2 number, since 2×338939478² = 229759939493824968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338939479) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 42150 + ... + 49542.

Almost surely, 2^338939478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 338939478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381131124).

338939478 is an abundant number, since it is smaller than the sum of its proper divisors (423322770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

338939478 is a wasteful number, since it uses less digits than its factorization.

338939478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7690 (or 7681 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 338939478 is about 18410.3090142453. The cubic root of 338939478 is about 697.2267677637.

The spelling of 338939478 in words is "three hundred thirty-eight million, nine hundred thirty-nine thousand, four hundred seventy-eight".