91894356 has 18 divisors (see below), whose sum is σ = 232288602. Its totient is φ = 30631440.

The previous prime is 91894331. The next prime is 91894373. The reversal of 91894356 is 65349819.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 78322500 + 13571856 = 8850^2 + 3684^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

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, 1276275 + ... + 1276346.

Almost surely, 2^91894356 is an apocalyptic number.

It is an amenable number.

91894356 is an abundant number, since it is smaller than the sum of its proper divisors (140394246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91894356 is a wasteful number, since it uses less digits than its factorization.

91894356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552631 (or 2552626 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 91894356 is about 9586.1543905781. The cubic root of 91894356 is about 451.2628821557.

The spelling of 91894356 in words is "ninety-one million, eight hundred ninety-four thousand, three hundred fifty-six".