399600893 has 2 divisors, whose sum is σ = 399600894. Its totient is φ = 399600892.

The previous prime is 399600871. The next prime is 399600917. The reversal of 399600893 is 398006993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 370678009 + 28922884 = 19253^2 + 5378^2 .

It is a cyclic number.

It is not a de Polignac number, because 399600893 - 2⁶ = 399600829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399600493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199800446 + 199800447.

It is an arithmetic number, because the mean of its divisors is an integer number (199800447).

Almost surely, 2^399600893 is an apocalyptic number.

It is an amenable number.

399600893 is a deficient number, since it is larger than the sum of its proper divisors (1).

399600893 is an equidigital number, since it uses as much as digits as its factorization.

399600893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 399600893 is about 19990.0198349076. The cubic root of 399600893 is about 736.5611643874.

The spelling of 399600893 in words is "three hundred ninety-nine million, six hundred thousand, eight hundred ninety-three".