338676309 has 20 divisors (see below), whose sum is σ = 508490400. Its totient is φ = 224638920.

The previous prime is 338676301. The next prime is 338676323. The reversal of 338676309 is 903676833.

It is a happy number.

338676309 is a `hidden beast` number, since 3 + 3 + 8 + 6 + 7 + 630 + 9 = 666.

It is not a de Polignac number, because 338676309 - 2³ = 338676301 is a prime.

It is a super-2 number, since 2×338676309² = 229403284555726962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338676301) 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, 5614 + ... + 26624.

It is an arithmetic number, because the mean of its divisors is an integer number (25424520).

Almost surely, 2^338676309 is an apocalyptic number.

It is an amenable number.

338676309 is a deficient number, since it is larger than the sum of its proper divisors (169814091).

338676309 is a wasteful number, since it uses less digits than its factorization.

338676309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21222 (or 21213 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The square root of 338676309 is about 18403.1602992530. The cubic root of 338676309 is about 697.0462675137.

The spelling of 338676309 in words is "three hundred thirty-eight million, six hundred seventy-six thousand, three hundred nine".