399162847 has 2 divisors, whose sum is σ = 399162848. Its totient is φ = 399162846.

The previous prime is 399162823. The next prime is 399162871. The reversal of 399162847 is 748261993.

It is a balanced prime because it is at equal distance from previous prime (399162823) and next prime (399162871).

It is an emirp because it is prime and its reverse (748261993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 399162847 - 2¹⁵ = 399130079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 399162847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399162877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199581423 + 199581424.

It is an arithmetic number, because the mean of its divisors is an integer number (199581424).

Almost surely, 2^399162847 is an apocalyptic number.

399162847 is a deficient number, since it is larger than the sum of its proper divisors (1).

399162847 is an equidigital number, since it uses as much as digits as its factorization.

399162847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 399162847 is about 19979.0602131331. The cubic root of 399162847 is about 736.2919243818.

The spelling of 399162847 in words is "three hundred ninety-nine million, one hundred sixty-two thousand, eight hundred forty-seven".