91394547364 has 12 divisors (see below), whose sum is σ = 165455646300. Its totient is φ = 44121505568.

The previous prime is 91394547347. The next prime is 91394547401. The reversal of 91394547364 is 46374549319.

It can be written as a sum of positive squares in 2 ways, for example, as 48466022500 + 42928524864 = 220150^2 + 207192^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393941899 + ... + 393942130.

It is an arithmetic number, because the mean of its divisors is an integer number (13787970525).

Almost surely, 2^91394547364 is an apocalyptic number.

It is an amenable number.

91394547364 is a deficient number, since it is larger than the sum of its proper divisors (74061098936).

91394547364 is a wasteful number, since it uses less digits than its factorization.

91394547364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787884062 (or 787884060 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 55.

The spelling of 91394547364 in words is "ninety-one billion, three hundred ninety-four million, five hundred forty-seven thousand, three hundred sixty-four".