338624609 has 4 divisors (see below), whose sum is σ = 339011604. Its totient is φ = 338237616.

The previous prime is 338624591. The next prime is 338624621. The reversal of 338624609 is 906426833.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 179158225 + 159466384 = 13385^2 + 12628^2 .

It is a cyclic number.

It is not a de Polignac number, because 338624609 - 2¹⁶ = 338559073 is a prime.

It is a super-2 number, since 2×338624609² = 229333251640805762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338624639) 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, 192182 + ... + 193935.

It is an arithmetic number, because the mean of its divisors is an integer number (84752901).

Almost surely, 2^338624609 is an apocalyptic number.

It is an amenable number.

338624609 is a deficient number, since it is larger than the sum of its proper divisors (386995).

338624609 is an equidigital number, since it uses as much as digits as its factorization.

338624609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386994.

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 338624609 is about 18401.7555955947. The cubic root of 338624609 is about 697.0107969430.

The spelling of 338624609 in words is "three hundred thirty-eight million, six hundred twenty-four thousand, six hundred nine".