399739354559 has 4 divisors (see below), whose sum is σ = 412634172480. Its totient is φ = 386844536640.

The previous prime is 399739354519. The next prime is 399739354579. The reversal of 399739354559 is 955453937993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 399739354559 - 2⁸ = 399739354303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 399739354492 and 399739354501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399739354519) 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 in 3 ways as a sum of consecutive naturals, for example, 6447408914 + ... + 6447408975.

It is an arithmetic number, because the mean of its divisors is an integer number (103158543120).

Almost surely, 2^399739354559 is an apocalyptic number.

399739354559 is a deficient number, since it is larger than the sum of its proper divisors (12894817921).

399739354559 is a wasteful number, since it uses less digits than its factorization.

399739354559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12894817920.

The product of its digits is 620014500, while the sum is 71.

The spelling of 399739354559 in words is "three hundred ninety-nine billion, seven hundred thirty-nine million, three hundred fifty-four thousand, five hundred fifty-nine".