963886991 has 12 divisors (see below), whose sum is σ = 998648136. Its totient is φ = 929797440.

The previous prime is 963886933. The next prime is 963886993. The reversal of 963886991 is 199688369.

It is a de Polignac number, because none of the positive numbers 2^k-963886991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 963886991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (963886993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1849811 + ... + 1850331.

It is an arithmetic number, because the mean of its divisors is an integer number (83220678).

Almost surely, 2^963886991 is an apocalyptic number.

963886991 is a deficient number, since it is larger than the sum of its proper divisors (34761145).

963886991 is an frugal number, since it uses more digits than its factorization.

963886991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 641 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 59.

The square root of 963886991 is about 31046.5294517761. The cubic root of 963886991 is about 987.8144457357.

The spelling of 963886991 in words is "nine hundred sixty-three million, eight hundred eighty-six thousand, nine hundred ninety-one".