6140639989 has 16 divisors (see below), whose sum is σ = 7105349376. Its totient is φ = 5244825600.

The previous prime is 6140639959. The next prime is 6140640007. The reversal of 6140639989 is 9899360416.

It is a cyclic number.

It is not a de Polignac number, because 6140639989 - 2¹³ = 6140631797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6140639959) 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, 79444 + ... + 136354.

It is an arithmetic number, because the mean of its divisors is an integer number (444084336).

Almost surely, 2^6140639989 is an apocalyptic number.

It is an amenable number.

6140639989 is a deficient number, since it is larger than the sum of its proper divisors (964709387).

6140639989 is a wasteful number, since it uses less digits than its factorization.

6140639989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57516.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The square root of 6140639989 is about 78362.2357325262. The cubic root of 6140639989 is about 1831.2088511234.

The spelling of 6140639989 in words is "six billion, one hundred forty million, six hundred thirty-nine thousand, nine hundred eighty-nine".