3938448539 has 4 divisors (see below), whose sum is σ = 4109685456. Its totient is φ = 3767211624.

The previous prime is 3938448533. The next prime is 3938448557. The reversal of 3938448539 is 9358448393.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3938448539 - 2⁴ = 3938448523 is a prime.

It is a super-2 number, since 2×3938448539² = 31022753788702469042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3938448533) 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, 85618424 + ... + 85618469.

It is an arithmetic number, because the mean of its divisors is an integer number (1027421364).

Almost surely, 2^3938448539 is an apocalyptic number.

3938448539 is a deficient number, since it is larger than the sum of its proper divisors (171236917).

3938448539 is a wasteful number, since it uses less digits than its factorization.

3938448539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171236916.

The product of its digits is 11197440, while the sum is 56.

The square root of 3938448539 is about 62757.0596745896. The cubic root of 3938448539 is about 1579.2166895174.

The spelling of 3938448539 in words is "three billion, nine hundred thirty-eight million, four hundred forty-eight thousand, five hundred thirty-nine".