6447089 has 8 divisors (see below), whose sum is σ = 7056768. Its totient is φ = 5841360.

The previous prime is 6447073. The next prime is 6447109. The reversal of 6447089 is 9807446.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6447089 - 2⁴ = 6447073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6447059) 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, 3239 + ... + 4835.

It is an arithmetic number, because the mean of its divisors is an integer number (882096).

Almost surely, 2^6447089 is an apocalyptic number.

It is an amenable number.

6447089 is a deficient number, since it is larger than the sum of its proper divisors (609679).

6447089 is a wasteful number, since it uses less digits than its factorization.

6447089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 6447089 is about 2539.1118525973. Note that the first 3 decimals coincide. The cubic root of 6447089 is about 186.1177906532.

It can be divided in two parts, 64 and 47089, that multiplied together give a square (3013696 = 1736²).

The spelling of 6447089 in words is "six million, four hundred forty-seven thousand, eighty-nine".