399338657143 has 4 divisors (see below), whose sum is σ = 405885192568. Its totient is φ = 392792121720.

The previous prime is 399338657117. The next prime is 399338657161. The reversal of 399338657143 is 341756833993.

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 399338657143 - 2⁵ = 399338657111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61), and also a Moran number because the ratio is a prime number: 6546535363 = 399338657143 / (3 + 9 + 9 + 3 + 3 + 8 + 6 + 5 + 7 + 1 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399338657243) 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, 3273267621 + ... + 3273267742.

It is an arithmetic number, because the mean of its divisors is an integer number (101471298142).

Almost surely, 2^399338657143 is an apocalyptic number.

399338657143 is a deficient number, since it is larger than the sum of its proper divisors (6546535425).

399338657143 is an equidigital number, since it uses as much as digits as its factorization.

399338657143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6546535424.

The product of its digits is 44089920, while the sum is 61.

The spelling of 399338657143 in words is "three hundred ninety-nine billion, three hundred thirty-eight million, six hundred fifty-seven thousand, one hundred forty-three".