6448390 has 16 divisors (see below), whose sum is σ = 12500208. Its totient is φ = 2380896.

The previous prime is 6448381. The next prime is 6448399. The reversal of 6448390 is 938446.

It is an interprime number because it is at equal distance from previous prime (6448381) and next prime (6448399).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24672 + ... + 24931.

It is an arithmetic number, because the mean of its divisors is an integer number (781263).

Almost surely, 2^6448390 is an apocalyptic number.

6448390 is a deficient number, since it is larger than the sum of its proper divisors (6051818).

6448390 is a wasteful number, since it uses less digits than its factorization.

6448390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49623.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 6448390 is about 2539.3680316173. The cubic root of 6448390 is about 186.1303091175.

The spelling of 6448390 in words is "six million, four hundred forty-eight thousand, three hundred ninety".