399296371 has 2 divisors, whose sum is σ = 399296372. Its totient is φ = 399296370.

The previous prime is 399296369. The next prime is 399296377. The reversal of 399296371 is 173692993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 399296371 - 2¹ = 399296369 is a prime.

Together with 399296369, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (399296377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199648185 + 199648186.

It is an arithmetic number, because the mean of its divisors is an integer number (199648186).

Almost surely, 2^399296371 is an apocalyptic number.

399296371 is a deficient number, since it is larger than the sum of its proper divisors (1).

399296371 is an equidigital number, since it uses as much as digits as its factorization.

399296371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 49.

The square root of 399296371 is about 19982.4015323484. The cubic root of 399296371 is about 736.3740142552.

The spelling of 399296371 in words is "three hundred ninety-nine million, two hundred ninety-six thousand, three hundred seventy-one".