8107439989 has 8 divisors (see below), whose sum is σ = 8976487968. Its totient is φ = 7260393360.

The previous prime is 8107439971. The next prime is 8107440053. The reversal of 8107439989 is 9899347018.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8107439989 - 2¹¹ = 8107437941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8107439089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5499562 + ... + 5501035.

It is an arithmetic number, because the mean of its divisors is an integer number (1122060996).

Almost surely, 2^8107439989 is an apocalyptic number.

It is an amenable number.

8107439989 is a deficient number, since it is larger than the sum of its proper divisors (869047979).

8107439989 is a wasteful number, since it uses less digits than its factorization.

8107439989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11000675.

The product of its (nonzero) digits is 3919104, while the sum is 58.

The square root of 8107439989 is about 90041.3237852487. The cubic root of 8107439989 is about 2008.9135477340.

The spelling of 8107439989 in words is "eight billion, one hundred seven million, four hundred thirty-nine thousand, nine hundred eighty-nine".