339723021 has 24 divisors (see below), whose sum is σ = 521537184. Its totient is φ = 195049440.

The previous prime is 339722987. The next prime is 339723029. The reversal of 339723021 is 120327933.

It is not a de Polignac number, because 339723021 - 2²³ = 331334413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 339723021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (339723029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2346 + ... + 26171.

It is an arithmetic number, because the mean of its divisors is an integer number (21730716).

Almost surely, 2^339723021 is an apocalyptic number.

It is an amenable number.

339723021 is a deficient number, since it is larger than the sum of its proper divisors (181814163).

339723021 is a wasteful number, since it uses less digits than its factorization.

339723021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28569 (or 28550 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 339723021 is about 18431.5767366767. The cubic root of 339723021 is about 697.7636253775.

The spelling of 339723021 in words is "three hundred thirty-nine million, seven hundred twenty-three thousand, twenty-one".