6443950 has 12 divisors (see below), whose sum is σ = 11985840. Its totient is φ = 2577560.

The previous prime is 6443947. The next prime is 6443953. The reversal of 6443950 is 593446.

It is an interprime number because it is at equal distance from previous prime (6443947) and next prime (6443953).

It is a super-5 number, since 5×6443950⁵ (a number of 35 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6443953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64390 + ... + 64489.

It is an arithmetic number, because the mean of its divisors is an integer number (998820).

Almost surely, 2^6443950 is an apocalyptic number.

6443950 is a deficient number, since it is larger than the sum of its proper divisors (5541890).

6443950 is a wasteful number, since it uses less digits than its factorization.

6443950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128891 (or 128886 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 6443950 is about 2538.4936478156. The cubic root of 6443950 is about 186.0875796755.

The spelling of 6443950 in words is "six million, four hundred forty-three thousand, nine hundred fifty".