3945744823 has 8 divisors (see below), whose sum is σ = 4008730880. Its totient is φ = 3883084920.

The previous prime is 3945744811. The next prime is 3945744857. The reversal of 3945744823 is 3284475493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3945744823 - 2²⁹ = 3408873911 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 (3945744223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57093 + ... + 105598.

It is an arithmetic number, because the mean of its divisors is an integer number (501091360).

Almost surely, 2^3945744823 is an apocalyptic number.

3945744823 is a deficient number, since it is larger than the sum of its proper divisors (62986057).

3945744823 is a wasteful number, since it uses less digits than its factorization.

3945744823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163077.

The product of its digits is 2903040, while the sum is 49.

The square root of 3945744823 is about 62815.1639574394. The cubic root of 3945744823 is about 1580.1912954037.

The spelling of 3945744823 in words is "three billion, nine hundred forty-five million, seven hundred forty-four thousand, eight hundred twenty-three".