4161939 has 4 divisors (see below), whose sum is σ = 5549256. Its totient is φ = 2774624.

The previous prime is 4161881. The next prime is 4161943. The reversal of 4161939 is 9391614.

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 4161939 - 2⁷ = 4161811 is a prime.

It is a D-number.

4161939 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4161959) 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, 693654 + ... + 693659.

It is an arithmetic number, because the mean of its divisors is an integer number (1387314).

Almost surely, 2^4161939 is an apocalyptic number.

4161939 is a deficient number, since it is larger than the sum of its proper divisors (1387317).

4161939 is a wasteful number, since it uses less digits than its factorization.

4161939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387316.

The product of its digits is 5832, while the sum is 33.

The square root of 4161939 is about 2040.0830865433. The cubic root of 4161939 is about 160.8540142419.

The spelling of 4161939 in words is "four million, one hundred sixty-one thousand, nine hundred thirty-nine".