6450889 has 4 divisors (see below), whose sum is σ = 6475140. Its totient is φ = 6426640.

The previous prime is 6450881. The next prime is 6450893. The reversal of 6450889 is 9880546.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115600 + 6335289 = 340^2 + 2517^2 .

It is a cyclic number.

It is not a de Polignac number, because 6450889 - 2³ = 6450881 is a prime.

It is a super-2 number, since 2×6450889² = 83227937780642, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6450881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11722 + ... + 12259.

It is an arithmetic number, because the mean of its divisors is an integer number (1618785).

Almost surely, 2^6450889 is an apocalyptic number.

It is an amenable number.

6450889 is a deficient number, since it is larger than the sum of its proper divisors (24251).

6450889 is a wasteful number, since it uses less digits than its factorization.

6450889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24250.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 6450889 is about 2539.8600355138. The cubic root of 6450889 is about 186.1543502383.

The spelling of 6450889 in words is "six million, four hundred fifty thousand, eight hundred eighty-nine".