9896776989 has 32 divisors (see below), whose sum is σ = 14460526080. Its totient is φ = 5970955200.

The previous prime is 9896776979. The next prime is 9896776993.

It is a happy number.

9896776989 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9896776989 - 2⁵ = 9896776957 is a prime.

It is a super-2 number, since 2×9896776989² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9896776979) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12417139 + ... + 12417935.

It is an arithmetic number, because the mean of its divisors is an integer number (451891440).

Almost surely, 2^9896776989 is an apocalyptic number.

It is an amenable number.

9896776989 is a deficient number, since it is larger than the sum of its proper divisors (4563749091).

9896776989 is a wasteful number, since it uses less digits than its factorization.

9896776989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041.

The product of its digits is 740710656, while the sum is 78.

The square root of 9896776989 is about 99482.5461525789. The cubic root of 9896776989 is about 2146.9961288042.

It can be divided in two parts, 9896 and 776989, that added together give a triangular number (786885 = T₁₂₅₄).

The spelling of 9896776989 in words is "nine billion, eight hundred ninety-six million, seven hundred seventy-six thousand, nine hundred eighty-nine".