338290609 has 4 divisors (see below), whose sum is σ = 339781104. Its totient is φ = 336800116.

The previous prime is 338290591. The next prime is 338290619. The reversal of 338290609 is 906092833.

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: 906092833 = 12211 ⋅74203.

It is a cyclic number.

It is not a de Polignac number, because 338290609 - 2⁵ = 338290577 is a prime.

It is a super-2 number, since 2×338290609² = 228881072275181762, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) 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 not an unprimeable number, because it can be changed into a prime (338290619) 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, 744907 + ... + 745360.

It is an arithmetic number, because the mean of its divisors is an integer number (84945276).

Almost surely, 2^338290609 is an apocalyptic number.

It is an amenable number.

338290609 is a deficient number, since it is larger than the sum of its proper divisors (1490495).

338290609 is a wasteful number, since it uses less digits than its factorization.

338290609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490494.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 338290609 is about 18392.6781356060. The cubic root of 338290609 is about 696.7815576588.

The spelling of 338290609 in words is "three hundred thirty-eight million, two hundred ninety thousand, six hundred nine".