338674921 has 4 divisors (see below), whose sum is σ = 364726852. Its totient is φ = 312622992.

The previous prime is 338674913. The next prime is 338674937. The reversal of 338674921 is 129476833.

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 45751696 + 292923225 = 6764^2 + 17115^2 .

It is a cyclic number.

It is not a de Polignac number, because 338674921 - 2³ = 338674913 is a prime.

It is a super-2 number, since 2×338674921² = 229401404228712482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338674951) 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, 13025946 + ... + 13025971.

It is an arithmetic number, because the mean of its divisors is an integer number (91181713).

Almost surely, 2^338674921 is an apocalyptic number.

It is an amenable number.

338674921 is a deficient number, since it is larger than the sum of its proper divisors (26051931).

338674921 is a wasteful number, since it uses less digits than its factorization.

338674921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26051930.

The product of its digits is 217728, while the sum is 43.

The square root of 338674921 is about 18403.1225883001. The cubic root of 338674921 is about 697.0453152755.

The spelling of 338674921 in words is "three hundred thirty-eight million, six hundred seventy-four thousand, nine hundred twenty-one".