339323921 has 4 divisors (see below), whose sum is σ = 342618432. Its totient is φ = 336029412.

The previous prime is 339323917. The next prime is 339323939. The reversal of 339323921 is 129323933.

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.

It is a cyclic number.

It is not a de Polignac number, because 339323921 - 2² = 339323917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (339323951) 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, 1647101 + ... + 1647306.

It is an arithmetic number, because the mean of its divisors is an integer number (85654608).

Almost surely, 2^339323921 is an apocalyptic number.

It is an amenable number.

339323921 is a deficient number, since it is larger than the sum of its proper divisors (3294511).

339323921 is a wasteful number, since it uses less digits than its factorization.

339323921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3294510.

The product of its digits is 26244, while the sum is 35.

The square root of 339323921 is about 18420.7470261116. The cubic root of 339323921 is about 697.4902785951.

The spelling of 339323921 in words is "three hundred thirty-nine million, three hundred twenty-three thousand, nine hundred twenty-one".