339408921 has 8 divisors (see below), whose sum is σ = 452846944. Its totient is φ = 226121760.

The previous prime is 339408911. The next prime is 339408929. The reversal of 339408921 is 129804933.

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

It is not a de Polignac number, because 339408921 - 2⁶ = 339408857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 339408921.

It is not an unprimeable number, because it can be changed into a prime (339408929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32356 + ... + 41541.

It is an arithmetic number, because the mean of its divisors is an integer number (56605868).

Almost surely, 2^339408921 is an apocalyptic number.

It is an amenable number.

339408921 is a deficient number, since it is larger than the sum of its proper divisors (113438023).

339408921 is a wasteful number, since it uses less digits than its factorization.

339408921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75431.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 339408921 is about 18423.0540627769. The cubic root of 339408921 is about 697.5485137310.

The spelling of 339408921 in words is "three hundred thirty-nine million, four hundred eight thousand, nine hundred twenty-one".