383749 has 4 divisors (see below), whose sum is σ = 396160. Its totient is φ = 371340.

The previous prime is 383729. The next prime is 383753. The reversal of 383749 is 947383.

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 a cyclic number.

It is not a de Polignac number, because 383749 - 2¹⁵ = 350981 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 (383729) 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, 6159 + ... + 6220.

It is an arithmetic number, because the mean of its divisors is an integer number (99040).

2³⁸³⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

383749 is a deficient number, since it is larger than the sum of its proper divisors (12411).

383749 is a wasteful number, since it uses less digits than its factorization.

383749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12410.

The product of its digits is 18144, while the sum is 34.

The square root of 383749 is about 619.4747775334. The cubic root of 383749 is about 72.6689835508.

It can be divided in two parts, 38374 and 9, that added together give a palindrome (38383).

The spelling of 383749 in words is "three hundred eighty-three thousand, seven hundred forty-nine".