494438399999 has 2 divisors, whose sum is σ = 494438400000. Its totient is φ = 494438399998.

The previous prime is 494438399947. The next prime is 494438400023. The reversal of 494438399999 is 999993834494.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 494438399999 - 2²⁸ = 494169964543 is a prime.

It is a super-2 number, since 2×494438399999² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494438396999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247219199999 + 247219200000.

It is an arithmetic number, because the mean of its divisors is an integer number (247219200000).

Almost surely, 2^494438399999 is an apocalyptic number.

494438399999 is a deficient number, since it is larger than the sum of its proper divisors (1).

494438399999 is an equidigital number, since it uses as much as digits as its factorization.

494438399999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2448880128, while the sum is 80.

The spelling of 494438399999 in words is "four hundred ninety-four billion, four hundred thirty-eight million, three hundred ninety-nine thousand, nine hundred ninety-nine".