399976301 has 2 divisors, whose sum is σ = 399976302. Its totient is φ = 399976300.

The previous prime is 399976259. The next prime is 399976303. The reversal of 399976301 is 103679993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205234276 + 194742025 = 14326^2 + 13955^2 .

It is a cyclic number.

It is not a de Polignac number, because 399976301 - 2¹⁸ = 399714157 is a prime.

Together with 399976303, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399976303) 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, 199988150 + 199988151.

It is an arithmetic number, because the mean of its divisors is an integer number (199988151).

Almost surely, 2^399976301 is an apocalyptic number.

It is an amenable number.

399976301 is a deficient number, since it is larger than the sum of its proper divisors (1).

399976301 is an equidigital number, since it uses as much as digits as its factorization.

399976301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 275562, while the sum is 47.

The square root of 399976301 is about 19999.4075162241. The cubic root of 399976301 is about 736.7917481303.

The spelling of 399976301 in words is "three hundred ninety-nine million, nine hundred seventy-six thousand, three hundred one".