338929921 has 8 divisors (see below), whose sum is σ = 371786688. Its totient is φ = 306414000.

The previous prime is 338929907. The next prime is 338929967. The reversal of 338929921 is 129929833.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 338929921 - 2⁷ = 338929793 is a prime.

It is a super-2 number, since 2×338929921² = 229746982698132482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338929021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83125 + ... + 87106.

It is an arithmetic number, because the mean of its divisors is an integer number (46473336).

Almost surely, 2^338929921 is an apocalyptic number.

It is an amenable number.

338929921 is a deficient number, since it is larger than the sum of its proper divisors (32856767).

338929921 is a wasteful number, since it uses less digits than its factorization.

338929921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170423.

The product of its digits is 209952, while the sum is 46.

The square root of 338929921 is about 18410.0494567505. The cubic root of 338929921 is about 697.2202145201.

The spelling of 338929921 in words is "three hundred thirty-eight million, nine hundred twenty-nine thousand, nine hundred twenty-one".