399437327 has 2 divisors, whose sum is σ = 399437328. Its totient is φ = 399437326.

The previous prime is 399437281. The next prime is 399437369. The reversal of 399437327 is 723734993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 399437327 - 2²⁴ = 382660111 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399457327) 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, 199718663 + 199718664.

It is an arithmetic number, because the mean of its divisors is an integer number (199718664).

Almost surely, 2^399437327 is an apocalyptic number.

399437327 is a deficient number, since it is larger than the sum of its proper divisors (1).

399437327 is an equidigital number, since it uses as much as digits as its factorization.

399437327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 47.

The square root of 399437327 is about 19985.9282246284. The cubic root of 399437327 is about 736.4606534299.

The spelling of 399437327 in words is "three hundred ninety-nine million, four hundred thirty-seven thousand, three hundred twenty-seven".