996123851 has 4 divisors (see below), whose sum is σ = 996253104. Its totient is φ = 995994600.

The previous prime is 996123847. The next prime is 996123881. The reversal of 996123851 is 158321699.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 996123851 - 2² = 996123847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (996123841) 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 3 ways as a sum of consecutive naturals, for example, 52280 + ... + 68741.

It is an arithmetic number, because the mean of its divisors is an integer number (249063276).

Almost surely, 2^996123851 is an apocalyptic number.

996123851 is a deficient number, since it is larger than the sum of its proper divisors (129253).

996123851 is a wasteful number, since it uses less digits than its factorization.

996123851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129252.

The product of its digits is 116640, while the sum is 44.

The square root of 996123851 is about 31561.4297996780. The cubic root of 996123851 is about 998.7062773368.

The spelling of 996123851 in words is "nine hundred ninety-six million, one hundred twenty-three thousand, eight hundred fifty-one".