9920259086 has 4 divisors (see below), whose sum is σ = 14880388632. Its totient is φ = 4960129542.

The previous prime is 9920259049. The next prime is 9920259091. The reversal of 9920259086 is 6809520299.

It is a happy number.

9920259086 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6809520299 = 719 ⋅9470821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2480064770 + ... + 2480064773.

It is an arithmetic number, because the mean of its divisors is an integer number (3720097158).

Almost surely, 2^9920259086 is an apocalyptic number.

9920259086 is a deficient number, since it is larger than the sum of its proper divisors (4960129546).

9920259086 is a wasteful number, since it uses less digits than its factorization.

9920259086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4960129545.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 9920259086 is about 99600.4974184366. The cubic root of 9920259086 is about 2148.6928478429.

The spelling of 9920259086 in words is "nine billion, nine hundred twenty million, two hundred fifty-nine thousand, eighty-six".