9975443965 has 16 divisors (see below), whose sum is σ = 12893930496. Its totient is φ = 7387142400.

The previous prime is 9975443963. The next prime is 9975443977. The reversal of 9975443965 is 5693445799.

It is not a de Polignac number, because 9975443965 - 2¹ = 9975443963 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 (9975443963) 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, 1395516 + ... + 1402645.

It is an arithmetic number, because the mean of its divisors is an integer number (805870656).

Almost surely, 2^9975443965 is an apocalyptic number.

It is an amenable number.

9975443965 is a deficient number, since it is larger than the sum of its proper divisors (2918486531).

9975443965 is a wasteful number, since it uses less digits than its factorization.

9975443965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798220.

The product of its digits is 36741600, while the sum is 61.

The square root of 9975443965 is about 99877.1443574555. The cubic root of 9975443965 is about 2152.6697654692.

The spelling of 9975443965 in words is "nine billion, nine hundred seventy-five million, four hundred forty-three thousand, nine hundred sixty-five".