96991087 has 2 divisors, whose sum is σ = 96991088. Its totient is φ = 96991086.

The previous prime is 96991079. The next prime is 96991091. The reversal of 96991087 is 78019969.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 96991087 - 2³ = 96991079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 96991087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (96991057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48495543 + 48495544.

It is an arithmetic number, because the mean of its divisors is an integer number (48495544).

Almost surely, 2^96991087 is an apocalyptic number.

96991087 is a deficient number, since it is larger than the sum of its proper divisors (1).

96991087 is an equidigital number, since it uses as much as digits as its factorization.

96991087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 96991087 is about 9848.4053023827. The cubic root of 96991087 is about 459.4560157419.

The spelling of 96991087 in words is "ninety-six million, nine hundred ninety-one thousand, eighty-seven".