4171939 has 4 divisors (see below), whose sum is σ = 4183920. Its totient is φ = 4159960.

The previous prime is 4171933. The next prime is 4171943. The reversal of 4171939 is 9391714.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9391714 = 2 ⋅4695857.

It is a cyclic number.

It is not a de Polignac number, because 4171939 - 2³ = 4171931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4171931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5452 + ... + 6169.

It is an arithmetic number, because the mean of its divisors is an integer number (1045980).

Almost surely, 2^4171939 is an apocalyptic number.

4171939 is a deficient number, since it is larger than the sum of its proper divisors (11981).

4171939 is a wasteful number, since it uses less digits than its factorization.

4171939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11980.

The product of its digits is 6804, while the sum is 34.

The square root of 4171939 is about 2042.5324966815. The cubic root of 4171939 is about 160.9827405852.

The spelling of 4171939 in words is "four million, one hundred seventy-one thousand, nine hundred thirty-nine".