338984809 has 4 divisors (see below), whose sum is σ = 339031440. Its totient is φ = 338938180.

The previous prime is 338984803. The next prime is 338984831. The reversal of 338984809 is 908489833.

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, and also an emirpimes, since its reverse is a distinct semiprime: 908489833 = 6967 ⋅130399.

It is a cyclic number.

It is not a de Polignac number, because 338984809 - 2⁹ = 338984297 is a prime.

It is a super-2 number, since 2×338984809² = 229821401465532962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338984803) 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, 9799 + ... + 27820.

It is an arithmetic number, because the mean of its divisors is an integer number (84757860).

Almost surely, 2^338984809 is an apocalyptic number.

It is an amenable number.

338984809 is a deficient number, since it is larger than the sum of its proper divisors (46631).

338984809 is an equidigital number, since it uses as much as digits as its factorization.

338984809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46630.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 338984809 is about 18411.5401039674. The cubic root of 338984809 is about 697.2578495937.

The spelling of 338984809 in words is "three hundred thirty-eight million, nine hundred eighty-four thousand, eight hundred nine".