399919301 has 2 divisors, whose sum is σ = 399919302. Its totient is φ = 399919300.

The previous prime is 399919283. The next prime is 399919321. The reversal of 399919301 is 103919993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398042401 + 1876900 = 19951^2 + 1370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-399919301 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399919321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199959650 + 199959651.

It is an arithmetic number, because the mean of its divisors is an integer number (199959651).

Almost surely, 2^399919301 is an apocalyptic number.

It is an amenable number.

399919301 is a deficient number, since it is larger than the sum of its proper divisors (1).

399919301 is an equidigital number, since it uses as much as digits as its factorization.

399919301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59049, while the sum is 44.

The square root of 399919301 is about 19997.9824232346. The cubic root of 399919301 is about 736.7567467859.

The spelling of 399919301 in words is "three hundred ninety-nine million, nine hundred nineteen thousand, three hundred one".