6441398 has 4 divisors (see below), whose sum is σ = 9662100. Its totient is φ = 3220698.

The previous prime is 6441389. The next prime is 6441427. The reversal of 6441398 is 8931446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8931446 = 2 ⋅4465723.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610348 + ... + 1610351.

It is an arithmetic number, because the mean of its divisors is an integer number (2415525).

Almost surely, 2^6441398 is an apocalyptic number.

6441398 is a deficient number, since it is larger than the sum of its proper divisors (3220702).

6441398 is a wasteful number, since it uses less digits than its factorization.

6441398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220701.

The product of its digits is 20736, while the sum is 35.

The square root of 6441398 is about 2537.9909377301. The cubic root of 6441398 is about 186.0630109866.

The spelling of 6441398 in words is "six million, four hundred forty-one thousand, three hundred ninety-eight".