321385449 has 32 divisors (see below), whose sum is σ = 543329280. Its totient is φ = 164116800.

The previous prime is 321385403. The next prime is 321385457. The reversal of 321385449 is 944583123.

It is not a de Polignac number, because 321385449 - 2¹³ = 321377257 is a prime.

It is a super-3 number, since 3×321385449³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (321385469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1839 + ... + 25419.

It is an arithmetic number, because the mean of its divisors is an integer number (16979040).

Almost surely, 2^321385449 is an apocalyptic number.

It is an amenable number.

321385449 is a deficient number, since it is larger than the sum of its proper divisors (221943831).

321385449 is a wasteful number, since it uses less digits than its factorization.

321385449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23661.

The product of its digits is 103680, while the sum is 39.

The square root of 321385449 is about 17927.2264726031. The cubic root of 321385449 is about 684.9760760288.

The spelling of 321385449 in words is "three hundred twenty-one million, three hundred eighty-five thousand, four hundred forty-nine".