4138147 has 4 divisors (see below), whose sum is σ = 4456480. Its totient is φ = 3819816.

The previous prime is 4138139. The next prime is 4138153. The reversal of 4138147 is 7418314.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7418314 = 2 ⋅3709157.

It is not a de Polignac number, because 4138147 - 2³ = 4138139 is a prime.

It is a Duffinian number.

4138147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4138247) 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, 159147 + ... + 159172.

It is an arithmetic number, because the mean of its divisors is an integer number (1114120).

Almost surely, 2^4138147 is an apocalyptic number.

4138147 is a deficient number, since it is larger than the sum of its proper divisors (318333).

4138147 is a wasteful number, since it uses less digits than its factorization.

4138147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318332.

The product of its digits is 2688, while the sum is 28.

The square root of 4138147 is about 2034.2435940664. The cubic root of 4138147 is about 160.5469174406.

The spelling of 4138147 in words is "four million, one hundred thirty-eight thousand, one hundred forty-seven".