961992689 has 24 divisors (see below), whose sum is σ = 1139624640. Its totient is φ = 795033792.

The previous prime is 961992683. The next prime is 961992709. The reversal of 961992689 is 986299169.

It is not a de Polignac number, because 961992689 - 2⁸ = 961992433 is a prime.

It is a super-3 number, since 3×961992689³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (961992683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3576047 + ... + 3576315.

It is an arithmetic number, because the mean of its divisors is an integer number (47484360).

Almost surely, 2^961992689 is an apocalyptic number.

It is an amenable number.

961992689 is a deficient number, since it is larger than the sum of its proper divisors (177631951).

961992689 is a wasteful number, since it uses less digits than its factorization.

961992689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 428 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 59.

The square root of 961992689 is about 31016.0069802675. The cubic root of 961992689 is about 987.1669126891.

The spelling of 961992689 in words is "nine hundred sixty-one million, nine hundred ninety-two thousand, six hundred eighty-nine".