4048139 has 4 divisors (see below), whose sum is σ = 4187760. Its totient is φ = 3908520.

The previous prime is 4048129. The next prime is 4048171. The reversal of 4048139 is 9318404.

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 4048139 - 2⁴ = 4048123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 139591 = 4048139 / (4 + 0 + 4 + 8 + 1 + 3 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4048129) 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, 69767 + ... + 69824.

It is an arithmetic number, because the mean of its divisors is an integer number (1046940).

Almost surely, 2^4048139 is an apocalyptic number.

4048139 is a deficient number, since it is larger than the sum of its proper divisors (139621).

4048139 is a wasteful number, since it uses less digits than its factorization.

4048139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139620.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 4048139 is about 2011.9987574549. The cubic root of 4048139 is about 159.3743667282.

The spelling of 4048139 in words is "four million, forty-eight thousand, one hundred thirty-nine".