4198939 has 4 divisors (see below), whose sum is σ = 4343760. Its totient is φ = 4054120.

The previous prime is 4198937. The next prime is 4198963. The reversal of 4198939 is 9398914.

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 4198939 - 2¹ = 4198937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4198895 and 4198904.

It is not an unprimeable number, because it can be changed into a prime (4198937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72367 + ... + 72424.

It is an arithmetic number, because the mean of its divisors is an integer number (1085940).

Almost surely, 2^4198939 is an apocalyptic number.

4198939 is a deficient number, since it is larger than the sum of its proper divisors (144821).

4198939 is a wasteful number, since it uses less digits than its factorization.

4198939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144820.

The product of its digits is 69984, while the sum is 43.

The square root of 4198939 is about 2049.1312793474. The cubic root of 4198939 is about 161.3292773647.

The spelling of 4198939 in words is "four million, one hundred ninety-eight thousand, nine hundred thirty-nine".