959649466689 has 9 divisors (see below), whose sum is σ = 1386164585793. Its totient is φ = 639764351892.

The previous prime is 959649466669. The next prime is 959649466691. The reversal of 959649466689 is 986664946959.

The square root of 959649466689 is 979617.

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

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 959649466689 - 2¹³ = 959649458497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (959649466649) 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, 2775582 + ... + 3102120.

Almost surely, 2^959649466689 is an apocalyptic number.

959649466689 is the 979617-th square number.

959649466689 is the 489809-th centered octagonal number.

It is an amenable number.

959649466689 is a deficient number, since it is larger than the sum of its proper divisors (426515119104).

959649466689 is an frugal number, since it uses more digits than its factorization.

959649466689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653084 (or 326542 counting only the distinct ones).

The product of its digits is 5441955840, while the sum is 81.

Multiplying 959649466689 by its sum of digits (81), we get a square (77731606801809 = 8816553²).

The spelling of 959649466689 in words is "nine hundred fifty-nine billion, six hundred forty-nine million, four hundred sixty-six thousand, six hundred eighty-nine".