399776747803 has 2 divisors, whose sum is σ = 399776747804. Its totient is φ = 399776747802.

The previous prime is 399776747801. The next prime is 399776747833. The reversal of 399776747803 is 308747677993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 399776747803 - 2¹ = 399776747801 is a prime.

Together with 399776747801, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (399776747801) 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, 199888373901 + 199888373902.

It is an arithmetic number, because the mean of its divisors is an integer number (199888373902).

Almost surely, 2^399776747803 is an apocalyptic number.

399776747803 is a deficient number, since it is larger than the sum of its proper divisors (1).

399776747803 is an equidigital number, since it uses as much as digits as its factorization.

399776747803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336063168, while the sum is 70.

The spelling of 399776747803 in words is "three hundred ninety-nine billion, seven hundred seventy-six million, seven hundred forty-seven thousand, eight hundred three".