399683101 has 2 divisors, whose sum is σ = 399683102. Its totient is φ = 399683100.

The previous prime is 399683083. The next prime is 399683117. The reversal of 399683101 is 101386993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331604100 + 68079001 = 18210^2 + 8251^2 .

It is a cyclic number.

It is not a de Polignac number, because 399683101 - 2⁷ = 399682973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399683161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199841550 + 199841551.

It is an arithmetic number, because the mean of its divisors is an integer number (199841551).

Almost surely, 2^399683101 is an apocalyptic number.

It is an amenable number.

399683101 is a deficient number, since it is larger than the sum of its proper divisors (1).

399683101 is an equidigital number, since it uses as much as digits as its factorization.

399683101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 399683101 is about 19992.0759552379. The cubic root of 399683101 is about 736.6116706712.

The spelling of 399683101 in words is "three hundred ninety-nine million, six hundred eighty-three thousand, one hundred one".