5678839909 has 16 divisors (see below), whose sum is σ = 6256298880. Its totient is φ = 5130639360.

The previous prime is 5678839897. The next prime is 5678839937. The reversal of 5678839909 is 9099388765.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5678839909 - 2⁷ = 5678839781 is a prime.

It is a super-2 number, since 2×5678839909² = 64498445424102256562, 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 (5678839709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127989 + ... + 166549.

It is an arithmetic number, because the mean of its divisors is an integer number (391018680).

Almost surely, 2^5678839909 is an apocalyptic number.

It is an amenable number.

5678839909 is a deficient number, since it is larger than the sum of its proper divisors (577458971).

5678839909 is a wasteful number, since it uses less digits than its factorization.

5678839909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38940.

The product of its (nonzero) digits is 29393280, while the sum is 64.

The square root of 5678839909 is about 75358.0779279833. The cubic root of 5678839909 is about 1784.1028018148.

The spelling of 5678839909 in words is "five billion, six hundred seventy-eight million, eight hundred thirty-nine thousand, nine hundred nine".