6349893789 has 4 divisors (see below), whose sum is σ = 8466525056. Its totient is φ = 4233262524.

The previous prime is 6349893763. The next prime is 6349893791. The reversal of 6349893789 is 9873989436.

It is a happy number.

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.

It is not a de Polignac number, because 6349893789 - 2⁷ = 6349893661 is a prime.

It is a super-2 number, since 2×6349893789² = 80642302263161553042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6349893709) 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, 1058315629 + ... + 1058315634.

It is an arithmetic number, because the mean of its divisors is an integer number (2116631264).

Almost surely, 2^6349893789 is an apocalyptic number.

It is an amenable number.

6349893789 is a deficient number, since it is larger than the sum of its proper divisors (2116631267).

6349893789 is a wasteful number, since it uses less digits than its factorization.

6349893789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116631266.

The product of its digits is 70543872, while the sum is 66.

The square root of 6349893789 is about 79686.2208226742. The cubic root of 6349893789 is about 1851.7775745462. Note that the first 3 decimals are identical.

The spelling of 6349893789 in words is "six billion, three hundred forty-nine million, eight hundred ninety-three thousand, seven hundred eighty-nine".