9977412769 has 9 divisors (see below), whose sum is σ = 10155386163. Its totient is φ = 9802510632.

The previous prime is 9977412749. The next prime is 9977412817. The reversal of 9977412769 is 9672147799.

The square root of 9977412769 is 99887.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3801339025 + 6176073744 = 61655^2 + 78588^2 .

It is not a de Polignac number, because 9977412769 - 2⁵ = 9977412737 is a prime.

It is a super-2 number, since 2×9977412769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9977412749) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5892487 + ... + 5894179.

Almost surely, 2^9977412769 is an apocalyptic number.

9977412769 is the 99887-th square number.

9977412769 is the 49944-th centered octagonal number.

It is an amenable number.

9977412769 is a deficient number, since it is larger than the sum of its proper divisors (177973394).

9977412769 is an frugal number, since it uses more digits than its factorization.

9977412769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3504 (or 1752 counting only the distinct ones).

The product of its digits is 12002256, while the sum is 61.

The cubic root of 9977412769 is about 2152.8113767454.

The spelling of 9977412769 in words is "nine billion, nine hundred seventy-seven million, four hundred twelve thousand, seven hundred sixty-nine".