338636479 has 4 divisors (see below), whose sum is σ = 341633376. Its totient is φ = 335639584.

The previous prime is 338636407. The next prime is 338636497. The reversal of 338636479 is 974636833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974636833 = 61 ⋅15977653.

It is a cyclic number.

It is not a de Polignac number, because 338636479 - 2⁷ = 338636351 is a prime.

It is a super-2 number, since 2×338636479² = 229349329819034882, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338631479) 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, 1498279 + ... + 1498504.

It is an arithmetic number, because the mean of its divisors is an integer number (85408344).

Almost surely, 2^338636479 is an apocalyptic number.

338636479 is a deficient number, since it is larger than the sum of its proper divisors (2996897).

338636479 is a wasteful number, since it uses less digits than its factorization.

338636479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996896.

The product of its digits is 1959552, while the sum is 49.

The square root of 338636479 is about 18402.0781163433. The cubic root of 338636479 is about 697.0189410858.

The spelling of 338636479 in words is "three hundred thirty-eight million, six hundred thirty-six thousand, four hundred seventy-nine".