984613391 has 2 divisors, whose sum is σ = 984613392. Its totient is φ = 984613390.

The previous prime is 984613373. The next prime is 984613403. The reversal of 984613391 is 193316489.

It is a strong prime.

It is an emirp because it is prime and its reverse (193316489) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-984613391 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (984613321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492306695 + 492306696.

It is an arithmetic number, because the mean of its divisors is an integer number (492306696).

Almost surely, 2^984613391 is an apocalyptic number.

984613391 is a deficient number, since it is larger than the sum of its proper divisors (1).

984613391 is an equidigital number, since it uses as much as digits as its factorization.

984613391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 984613391 is about 31378.5498549566. The cubic root of 984613391 is about 994.8445978356.

The spelling of 984613391 in words is "nine hundred eighty-four million, six hundred thirteen thousand, three hundred ninety-one".