91394506 has 12 divisors (see below), whose sum is σ = 159474258. Its totient is φ = 39169032.

The previous prime is 91394491. The next prime is 91394509. The reversal of 91394506 is 60549319.

It can be written as a sum of positive squares in only one way, i.e., 88642225 + 2752281 = 9415^2 + 1659^2 .

It is not an unprimeable number, because it can be changed into a prime (91394509) 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, 466201 + ... + 466396.

Almost surely, 2^91394506 is an apocalyptic number.

91394506 is a deficient number, since it is larger than the sum of its proper divisors (68079752).

91394506 is a wasteful number, since it uses less digits than its factorization.

91394506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932613 (or 932606 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 91394506 is about 9560.0473848198. The cubic root of 91394506 is about 450.4431946402.

The spelling of 91394506 in words is "ninety-one million, three hundred ninety-four thousand, five hundred six".