3862421139 has 4 divisors (see below), whose sum is σ = 5149894856. Its totient is φ = 2574947424.

The previous prime is 3862421111. The next prime is 3862421141. The reversal of 3862421139 is 9311242683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9311242683 = 3 ⋅3103747561.

It is not a de Polignac number, because 3862421139 - 2⁷ = 3862421011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3862421097 and 3862421106.

It is not an unprimeable number, because it can be changed into a prime (3862421149) 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, 643736854 + ... + 643736859.

It is an arithmetic number, because the mean of its divisors is an integer number (1287473714).

Almost surely, 2^3862421139 is an apocalyptic number.

3862421139 is a deficient number, since it is larger than the sum of its proper divisors (1287473717).

3862421139 is a wasteful number, since it uses less digits than its factorization.

3862421139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287473716.

The product of its digits is 62208, while the sum is 39.

The square root of 3862421139 is about 62148.3800191123. The cubic root of 3862421139 is about 1568.9889143614.

The spelling of 3862421139 in words is "three billion, eight hundred sixty-two million, four hundred twenty-one thousand, one hundred thirty-nine".