4138831393 has 4 divisors (see below), whose sum is σ = 4318780608. Its totient is φ = 3958882180.

The previous prime is 4138831391. The next prime is 4138831453. The reversal of 4138831393 is 3931388314.

It is a happy number.

4138831393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4138831393 - 2¹ = 4138831391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4138831391) 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, 89974573 + ... + 89974618.

It is an arithmetic number, because the mean of its divisors is an integer number (1079695152).

Almost surely, 2^4138831393 is an apocalyptic number.

It is an amenable number.

4138831393 is a deficient number, since it is larger than the sum of its proper divisors (179949215).

4138831393 is a wasteful number, since it uses less digits than its factorization.

4138831393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179949214.

The product of its digits is 186624, while the sum is 43.

The square root of 4138831393 is about 64333.7500306021. The cubic root of 4138831393 is about 1605.5576770856.

The spelling of 4138831393 in words is "four billion, one hundred thirty-eight million, eight hundred thirty-one thousand, three hundred ninety-three".