963921 has 16 divisors (see below), whose sum is σ = 1482624. Its totient is φ = 545664.

The previous prime is 963913. The next prime is 963943. The reversal of 963921 is 129369.

It is not a de Polignac number, because 963921 - 2³ = 963913 is a prime.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 963921.

It is not an unprimeable number, because it can be changed into a prime (963901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4021 + ... + 4253.

It is an arithmetic number, because the mean of its divisors is an integer number (92664).

2⁹⁶³⁹²¹ is an apocalyptic number.

It is an amenable number.

963921 is a deficient number, since it is larger than the sum of its proper divisors (518703).

963921 is a wasteful number, since it uses less digits than its factorization.

963921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440.

The product of its digits is 2916, while the sum is 30.

The square root of 963921 is about 981.7947850748. The cubic root of 963921 is about 98.7826063345.

The spelling of 963921 in words is "nine hundred sixty-three thousand, nine hundred twenty-one".