383745823 has 4 divisors (see below), whose sum is σ = 400430448. Its totient is φ = 367061200.

The previous prime is 383745821. The next prime is 383745919. The reversal of 383745823 is 328547383.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328547383 = 37 ⋅8879659.

It is a cyclic number.

It is not a de Polignac number, because 383745823 - 2¹ = 383745821 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 383745823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383745821) 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, 8342278 + ... + 8342323.

It is an arithmetic number, because the mean of its divisors is an integer number (100107612).

Almost surely, 2^383745823 is an apocalyptic number.

383745823 is a deficient number, since it is larger than the sum of its proper divisors (16684625).

383745823 is a wasteful number, since it uses less digits than its factorization.

383745823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16684624.

The product of its digits is 483840, while the sum is 43.

The square root of 383745823 is about 19589.4314108399. The cubic root of 383745823 is about 726.6878301171.

The spelling of 383745823 in words is "three hundred eighty-three million, seven hundred forty-five thousand, eight hundred twenty-three".