996264991 has 4 divisors (see below), whose sum is σ = 1054868832. Its totient is φ = 937661152.

The previous prime is 996264967. The next prime is 996265001. The reversal of 996264991 is 199462699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199462699 = 661 ⋅301759.

It is a cyclic number.

It is not a de Polignac number, because 996264991 - 2¹⁹ = 995740703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996264901) 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 3 ways as a sum of consecutive naturals, for example, 29301895 + ... + 29301928.

It is an arithmetic number, because the mean of its divisors is an integer number (263717208).

Almost surely, 2^996264991 is an apocalyptic number.

996264991 is a deficient number, since it is larger than the sum of its proper divisors (58603841).

996264991 is a wasteful number, since it uses less digits than its factorization.

996264991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58603840.

The product of its digits is 1889568, while the sum is 55.

The square root of 996264991 is about 31563.6656774843. The cubic root of 996264991 is about 998.7534437432.

The spelling of 996264991 in words is "nine hundred ninety-six million, two hundred sixty-four thousand, nine hundred ninety-one".