93471993 has 6 divisors (see below), whose sum is σ = 135015114. Its totient is φ = 62314656.

The previous prime is 93471979. The next prime is 93472003. The reversal of 93471993 is 39917439.

93471993 is a `hidden beast` number, since 93 + 471 + 9 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 89359209 + 4112784 = 9453^2 + 2028^2 .

It is not a de Polignac number, because 93471993 - 2⁹ = 93471481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (93471943) 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 in 5 ways as a sum of consecutive naturals, for example, 5192880 + ... + 5192897.

It is an arithmetic number, because the mean of its divisors is an integer number (22502519).

Almost surely, 2^93471993 is an apocalyptic number.

It is an amenable number.

93471993 is a deficient number, since it is larger than the sum of its proper divisors (41543121).

93471993 is a wasteful number, since it uses less digits than its factorization.

93471993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10385783 (or 10385780 counting only the distinct ones).

The product of its digits is 183708, while the sum is 45.

The square root of 93471993 is about 9668.0914869482. The cubic root of 93471993 is about 453.8306616159.

It can be divided in two parts, 934 and 71993, that added together give a palindrome (72927).

The spelling of 93471993 in words is "ninety-three million, four hundred seventy-one thousand, nine hundred ninety-three".