323889861 has 4 divisors (see below), whose sum is σ = 431853152. Its totient is φ = 215926572.

The previous prime is 323889857. The next prime is 323889869. The reversal of 323889861 is 168988323.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 323889861 - 2² = 323889857 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 323889861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323889869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53981641 + ... + 53981646.

It is an arithmetic number, because the mean of its divisors is an integer number (107963288).

Almost surely, 2^323889861 is an apocalyptic number.

It is an amenable number.

323889861 is a deficient number, since it is larger than the sum of its proper divisors (107963291).

323889861 is a wasteful number, since it uses less digits than its factorization.

323889861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107963290.

The product of its digits is 497664, while the sum is 48.

The square root of 323889861 is about 17996.9403232883. The cubic root of 323889861 is about 686.7507109822.

The spelling of 323889861 in words is "three hundred twenty-three million, eight hundred eighty-nine thousand, eight hundred sixty-one".