3678139 has 4 divisors (see below), whose sum is σ = 3682120. Its totient is φ = 3674160.

The previous prime is 3678131. The next prime is 3678149. The reversal of 3678139 is 9318763.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9318763 = 1061 ⋅8783.

It is a cyclic number.

It is not a de Polignac number, because 3678139 - 2³ = 3678131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3678098 and 3678107.

It is not an unprimeable number, because it can be changed into a prime (3678131) 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, 199 + ... + 2719.

It is an arithmetic number, because the mean of its divisors is an integer number (920530).

Almost surely, 2^3678139 is an apocalyptic number.

3678139 is a deficient number, since it is larger than the sum of its proper divisors (3981).

3678139 is a wasteful number, since it uses less digits than its factorization.

3678139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3980.

The product of its digits is 27216, while the sum is 37.

The square root of 3678139 is about 1917.8474913298. The cubic root of 3678139 is about 154.3628230491.

The spelling of 3678139 in words is "three million, six hundred seventy-eight thousand, one hundred thirty-nine".