966399 has 16 divisors (see below), whose sum is σ = 1559808. Its totient is φ = 519552.

The previous prime is 966389. The next prime is 966401. The reversal of 966399 is 993669.

It is not a de Polignac number, because 966399 - 2⁷ = 966271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 966399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (966319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 997 + ... + 1710.

It is an arithmetic number, because the mean of its divisors is an integer number (97488).

2⁹⁶⁶³⁹⁹ is an apocalyptic number.

966399 is a deficient number, since it is larger than the sum of its proper divisors (593409).

966399 is a wasteful number, since it uses less digits than its factorization.

966399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734.

The product of its digits is 78732, while the sum is 42.

The square root of 966399 is about 983.0559495776. The cubic root of 966399 is about 98.8671823660.

The spelling of 966399 in words is "nine hundred sixty-six thousand, three hundred ninety-nine".