3858139 has 4 divisors (see below), whose sum is σ = 3872056. Its totient is φ = 3844224.

The previous prime is 3858103. The next prime is 3858143. The reversal of 3858139 is 9318583.

3858139 = T₂ + T₃ + ... + T₂₈₄.

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 3858139 - 2⁷ = 3858011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3858098 and 3858107.

It is not an unprimeable number, because it can be changed into a prime (3858199) 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, 6534 + ... + 7099.

It is an arithmetic number, because the mean of its divisors is an integer number (968014).

Almost surely, 2^3858139 is an apocalyptic number.

3858139 is a deficient number, since it is larger than the sum of its proper divisors (13917).

3858139 is a wasteful number, since it uses less digits than its factorization.

3858139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13916.

The product of its digits is 25920, while the sum is 37.

The square root of 3858139 is about 1964.2146013102. The cubic root of 3858139 is about 156.8408871187.

The spelling of 3858139 in words is "three million, eight hundred fifty-eight thousand, one hundred thirty-nine".