383493889 has 3 divisors (see below), whose sum is σ = 383513473. Its totient is φ = 383474306.

The previous prime is 383493833. The next prime is 383493917. The reversal of 383493889 is 988394383.

It is a happy number.

The square root of 383493889 is 19583.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 383493889 - 2¹⁵ = 383461121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (383493829) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9792 + ... + 29374.

Almost surely, 2^383493889 is an apocalyptic number.

383493889 is the 19583-rd square number.

383493889 is the 9792-nd centered octagonal number.

It is an amenable number.

383493889 is a deficient number, since it is larger than the sum of its proper divisors (19584).

383493889 is an frugal number, since it uses more digits than its factorization.

383493889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39166 (or 19583 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 55.

The cubic root of 383493889 is about 726.5287687110.

The spelling of 383493889 in words is "three hundred eighty-three million, four hundred ninety-three thousand, eight hundred eighty-nine".