96858991 has 2 divisors, whose sum is σ = 96858992. Its totient is φ = 96858990.

The previous prime is 96858989. The next prime is 96859027. The reversal of 96858991 is 19985869.

It is a weak prime.

It is an emirp because it is prime and its reverse (19985869) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 96858991 - 2¹ = 96858989 is a prime.

Together with 96858989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (96858901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48429495 + 48429496.

It is an arithmetic number, because the mean of its divisors is an integer number (48429496).

Almost surely, 2^96858991 is an apocalyptic number.

96858991 is a deficient number, since it is larger than the sum of its proper divisors (1).

96858991 is an equidigital number, since it uses as much as digits as its factorization.

96858991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 55.

The square root of 96858991 is about 9841.6965509002. The cubic root of 96858991 is about 459.2473372001.

It can be divided in two parts, 9 and 6858991, that added together give a cube (6859000 = 190³).

The spelling of 96858991 in words is "ninety-six million, eight hundred fifty-eight thousand, nine hundred ninety-one".