913491247 has 2 divisors, whose sum is σ = 913491248. Its totient is φ = 913491246.

The previous prime is 913491223. The next prime is 913491301. The reversal of 913491247 is 742194319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 913491247 - 2¹⁹ = 912966959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913491347) by changing a digit.

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 as a sum of consecutive naturals, namely, 456745623 + 456745624.

It is an arithmetic number, because the mean of its divisors is an integer number (456745624).

Almost surely, 2^913491247 is an apocalyptic number.

913491247 is a deficient number, since it is larger than the sum of its proper divisors (1).

913491247 is an equidigital number, since it uses as much as digits as its factorization.

913491247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 913491247 is about 30224.0177177026. The cubic root of 913491247 is about 970.2897943783.

The spelling of 913491247 in words is "nine hundred thirteen million, four hundred ninety-one thousand, two hundred forty-seven".