91394903 has 2 divisors, whose sum is σ = 91394904. Its totient is φ = 91394902.

The previous prime is 91394879. The next prime is 91394923. The reversal of 91394903 is 30949319.

It is a strong prime.

It is an emirp because it is prime and its reverse (30949319) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91394903 - 2¹⁶ = 91329367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91394923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45697451 + 45697452.

It is an arithmetic number, because the mean of its divisors is an integer number (45697452).

Almost surely, 2^91394903 is an apocalyptic number.

91394903 is a deficient number, since it is larger than the sum of its proper divisors (1).

91394903 is an equidigital number, since it uses as much as digits as its factorization.

91394903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 91394903 is about 9560.0681482927. The cubic root of 91394903 is about 450.4438468519.

The spelling of 91394903 in words is "ninety-one million, three hundred ninety-four thousand, nine hundred three".