321412399 has 16 divisors (see below), whose sum is σ = 401147136. Its totient is φ = 250185600.

The previous prime is 321412393. The next prime is 321412411. The reversal of 321412399 is 993214123.

It is not a de Polignac number, because 321412399 - 2¹¹ = 321410351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321412393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103264 + ... + 106330.

It is an arithmetic number, because the mean of its divisors is an integer number (25071696).

Almost surely, 2^321412399 is an apocalyptic number.

321412399 is a deficient number, since it is larger than the sum of its proper divisors (79734737).

321412399 is a wasteful number, since it uses less digits than its factorization.

321412399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446.

The product of its digits is 11664, while the sum is 34.

The square root of 321412399 is about 17927.9781068586. The cubic root of 321412399 is about 684.9952218751.

The spelling of 321412399 in words is "three hundred twenty-one million, four hundred twelve thousand, three hundred ninety-nine".