6433489 has 4 divisors (see below), whose sum is σ = 6438640. Its totient is φ = 6428340.

The previous prime is 6433421. The next prime is 6433519. The reversal of 6433489 is 9843346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9843346 = 2 ⋅4921673.

It is a cyclic number.

It is not a de Polignac number, because 6433489 - 2¹¹ = 6431441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6433409) 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, 622 + ... + 3640.

It is an arithmetic number, because the mean of its divisors is an integer number (1609660).

Almost surely, 2^6433489 is an apocalyptic number.

It is an amenable number.

6433489 is a deficient number, since it is larger than the sum of its proper divisors (5151).

6433489 is a wasteful number, since it uses less digits than its factorization.

6433489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5150.

The product of its digits is 62208, while the sum is 37.

The square root of 6433489 is about 2536.4323369647. The cubic root of 6433489 is about 185.9868279877.

It can be divided in two parts, 64 and 33489, that multiplied together give a square (2143296 = 1464²).

The spelling of 6433489 in words is "six million, four hundred thirty-three thousand, four hundred eighty-nine".