6390441 has 16 divisors (see below), whose sum is σ = 9966400. Its totient is φ = 4035744.

The previous prime is 6390431. The next prime is 6390443. The reversal of 6390441 is 1440936.

It is not a de Polignac number, because 6390441 - 2⁵ = 6390409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6390443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5716 + ... + 6741.

It is an arithmetic number, because the mean of its divisors is an integer number (622900).

Almost surely, 2^6390441 is an apocalyptic number.

It is an amenable number.

6390441 is a deficient number, since it is larger than the sum of its proper divisors (3575959).

6390441 is a wasteful number, since it uses less digits than its factorization.

6390441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12485 (or 12479 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 6390441 is about 2527.9321588998. The cubic root of 6390441 is about 185.5710719784.

The spelling of 6390441 in words is "six million, three hundred ninety thousand, four hundred forty-one".