4198739 has 4 divisors (see below), whose sum is σ = 4207320. Its totient is φ = 4190160.

The previous prime is 4198729. The next prime is 4198757. The reversal of 4198739 is 9378914.

It is a happy number.

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 4198739 - 2¹² = 4194643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4198696 and 4198705.

It is not an unprimeable number, because it can be changed into a prime (4198709) 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, 3509 + ... + 4550.

It is an arithmetic number, because the mean of its divisors is an integer number (1051830).

Almost surely, 2^4198739 is an apocalyptic number.

4198739 is a deficient number, since it is larger than the sum of its proper divisors (8581).

4198739 is an equidigital number, since it uses as much as digits as its factorization.

4198739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8580.

The product of its digits is 54432, while the sum is 41.

The square root of 4198739 is about 2049.0824775982. The cubic root of 4198739 is about 161.3267158947.

The spelling of 4198739 in words is "four million, one hundred ninety-eight thousand, seven hundred thirty-nine".