321699349 has 16 divisors (see below), whose sum is σ = 349113600. Its totient is φ = 295735104.

The previous prime is 321699331. The next prime is 321699373. The reversal of 321699349 is 943996123.

It is a cyclic number.

It is not a de Polignac number, because 321699349 - 2¹¹ = 321697301 is a prime.

It is a super-2 number, since 2×321699349² = 206980942294047602, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321699299 and 321699308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321699649) 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, 47242 + ... + 53620.

It is an arithmetic number, because the mean of its divisors is an integer number (21819600).

Almost surely, 2^321699349 is an apocalyptic number.

It is an amenable number.

321699349 is a deficient number, since it is larger than the sum of its proper divisors (27414251).

321699349 is a wasteful number, since it uses less digits than its factorization.

321699349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6492.

The product of its digits is 314928, while the sum is 46.

The square root of 321699349 is about 17935.9791759469. The cubic root of 321699349 is about 685.1990108535.

The spelling of 321699349 in words is "three hundred twenty-one million, six hundred ninety-nine thousand, three hundred forty-nine".