87435793 has 2 divisors, whose sum is σ = 87435794. Its totient is φ = 87435792.

The previous prime is 87435791. The next prime is 87435827. The reversal of 87435793 is 39753478.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76860289 + 10575504 = 8767^2 + 3252^2 .

It is a cyclic number.

It is not a de Polignac number, because 87435793 - 2¹ = 87435791 is a prime.

Together with 87435791, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (87435791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43717896 + 43717897.

It is an arithmetic number, because the mean of its divisors is an integer number (43717897).

Almost surely, 2^87435793 is an apocalyptic number.

It is an amenable number.

87435793 is a deficient number, since it is larger than the sum of its proper divisors (1).

87435793 is an equidigital number, since it uses as much as digits as its factorization.

87435793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 46.

The square root of 87435793 is about 9350.7108285948. The cubic root of 87435793 is about 443.8433844858.

The spelling of 87435793 in words is "eighty-seven million, four hundred thirty-five thousand, seven hundred ninety-three".