4387139 has 4 divisors (see below), whose sum is σ = 4645224. Its totient is φ = 4129056.

The previous prime is 4387133. The next prime is 4387147. The reversal of 4387139 is 9317834.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9317834 = 2 ⋅4658917.

It is a cyclic number.

It is not a de Polignac number, because 4387139 - 2⁸ = 4386883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4387099 and 4387108.

It is not an unprimeable number, because it can be changed into a prime (4387133) 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, 129017 + ... + 129050.

It is an arithmetic number, because the mean of its divisors is an integer number (1161306).

Almost surely, 2^4387139 is an apocalyptic number.

4387139 is a deficient number, since it is larger than the sum of its proper divisors (258085).

4387139 is a wasteful number, since it uses less digits than its factorization.

4387139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258084.

The product of its digits is 18144, while the sum is 35.

The square root of 4387139 is about 2094.5498323029. The cubic root of 4387139 is about 163.7044423892.

The spelling of 4387139 in words is "four million, three hundred eighty-seven thousand, one hundred thirty-nine".