75899891 has 2 divisors, whose sum is σ = 75899892. Its totient is φ = 75899890.

The previous prime is 75899843. The next prime is 75899911. The reversal of 75899891 is 19899857.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75899891 - 2¹⁸ = 75637747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75899591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37949945 + 37949946.

It is an arithmetic number, because the mean of its divisors is an integer number (37949946).

Almost surely, 2^75899891 is an apocalyptic number.

75899891 is a deficient number, since it is larger than the sum of its proper divisors (1).

75899891 is an equidigital number, since it uses as much as digits as its factorization.

75899891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 56.

The square root of 75899891 is about 8712.0543501519. The cubic root of 75899891 is about 423.3962924665.

The spelling of 75899891 in words is "seventy-five million, eight hundred ninety-nine thousand, eight hundred ninety-one".