96991143 has 32 divisors (see below), whose sum is σ = 140025600. Its totient is φ = 59533056.

The previous prime is 96991133. The next prime is 96991211. The reversal of 96991143 is 34119969.

It is not a de Polignac number, because 96991143 - 2⁶ = 96991079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 96991095 and 96991104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (96991133) 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 31 ways as a sum of consecutive naturals, for example, 416155 + ... + 416387.

It is an arithmetic number, because the mean of its divisors is an integer number (4375800).

Almost surely, 2^96991143 is an apocalyptic number.

96991143 is a deficient number, since it is larger than the sum of its proper divisors (43034457).

96991143 is a wasteful number, since it uses less digits than its factorization.

96991143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431.

The product of its digits is 52488, while the sum is 42.

The square root of 96991143 is about 9848.4081454822. The cubic root of 96991143 is about 459.4561041676.

The spelling of 96991143 in words is "ninety-six million, nine hundred ninety-one thousand, one hundred forty-three".