399336771959 has 2 divisors, whose sum is σ = 399336771960. Its totient is φ = 399336771958.

The previous prime is 399336771949. The next prime is 399336771983. The reversal of 399336771959 is 959177633993.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-399336771959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 399336771892 and 399336771901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399336771949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199668385979 + 199668385980.

It is an arithmetic number, because the mean of its divisors is an integer number (199668385980).

Almost surely, 2^399336771959 is an apocalyptic number.

399336771959 is a deficient number, since it is larger than the sum of its proper divisors (1).

399336771959 is an equidigital number, since it uses as much as digits as its factorization.

399336771959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 260406090, while the sum is 71.

The spelling of 399336771959 in words is "three hundred ninety-nine billion, three hundred thirty-six million, seven hundred seventy-one thousand, nine hundred fifty-nine".