383990743 has 4 divisors (see below), whose sum is σ = 384144520. Its totient is φ = 383836968.

The previous prime is 383990729. The next prime is 383990749. The reversal of 383990743 is 347099383.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 347099383 = 2719 ⋅127657.

It is a cyclic number.

It is not a de Polignac number, because 383990743 - 2²¹ = 381893591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 383990693 and 383990702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383990749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73080 + ... + 78157.

It is an arithmetic number, because the mean of its divisors is an integer number (96036130).

Almost surely, 2^383990743 is an apocalyptic number.

383990743 is a deficient number, since it is larger than the sum of its proper divisors (153777).

383990743 is a wasteful number, since it uses less digits than its factorization.

383990743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153776.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 383990743 is about 19595.6817436904. The cubic root of 383990743 is about 726.8423964313.

The spelling of 383990743 in words is "three hundred eighty-three million, nine hundred ninety thousand, seven hundred forty-three".