6469789 has 4 divisors (see below), whose sum is σ = 6475420. Its totient is φ = 6464160.

The previous prime is 6469781. The next prime is 6469807. The reversal of 6469789 is 9879646.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3545689 + 2924100 = 1883^2 + 1710^2 .

It is a cyclic number.

It is not a de Polignac number, because 6469789 - 2³ = 6469781 is a prime.

It is a d-powerful number, because it can be written as 6² + 4⁴ + 6⁸ + 9⁴ + 7³ + 8 + 9⁷ .

It is a deceptive number, since it divides R_6469788.

It is a Duffinian number.

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6469781) 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, 402 + ... + 3619.

It is an arithmetic number, because the mean of its divisors is an integer number (1618855).

Almost surely, 2^6469789 is an apocalyptic number.

6469789 is the 1609-th heptagonal number.

It is an amenable number.

6469789 is a deficient number, since it is larger than the sum of its proper divisors (5631).

6469789 is a wasteful number, since it uses less digits than its factorization.

6469789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5630.

The product of its digits is 653184, while the sum is 49.

The square root of 6469789 is about 2543.5779917274. The cubic root of 6469789 is about 186.3359731009.

The spelling of 6469789 in words is "six million, four hundred sixty-nine thousand, seven hundred eighty-nine".