994238347447 has 2 divisors, whose sum is σ = 994238347448. Its totient is φ = 994238347446.

The previous prime is 994238347439. The next prime is 994238347469. The reversal of 994238347447 is 744743832499.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 994238347447 - 2³ = 994238347439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994238347477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497119173723 + 497119173724.

It is an arithmetic number, because the mean of its divisors is an integer number (497119173724).

Almost surely, 2^994238347447 is an apocalyptic number.

994238347447 is a deficient number, since it is larger than the sum of its proper divisors (1).

994238347447 is an equidigital number, since it uses as much as digits as its factorization.

994238347447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 146313216, while the sum is 64.

The spelling of 994238347447 in words is "nine hundred ninety-four billion, two hundred thirty-eight million, three hundred forty-seven thousand, four hundred forty-seven".