913398749 has 2 divisors, whose sum is σ = 913398750. Its totient is φ = 913398748.

The previous prime is 913398727. The next prime is 913398751. The reversal of 913398749 is 947893319.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 709423225 + 203975524 = 26635^2 + 14282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-913398749 is a prime.

Together with 913398751, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 913398749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913398709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456699374 + 456699375.

It is an arithmetic number, because the mean of its divisors is an integer number (456699375).

Almost surely, 2^913398749 is an apocalyptic number.

It is an amenable number.

913398749 is a deficient number, since it is larger than the sum of its proper divisors (1).

913398749 is an equidigital number, since it uses as much as digits as its factorization.

913398749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 53.

The square root of 913398749 is about 30222.4874720795. The cubic root of 913398749 is about 970.2570435099.

The spelling of 913398749 in words is "nine hundred thirteen million, three hundred ninety-eight thousand, seven hundred forty-nine".