399337296229 has 2 divisors, whose sum is σ = 399337296230. Its totient is φ = 399337296228.

The previous prime is 399337296209. The next prime is 399337296301. The reversal of 399337296229 is 922692733993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 355367400129 + 43969896100 = 596127^2 + 209690^2 .

It is a cyclic number.

It is not a de Polignac number, because 399337296229 - 2⁷ = 399337296101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399337296209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199668648114 + 199668648115.

It is an arithmetic number, because the mean of its divisors is an integer number (199668648115).

Almost surely, 2^399337296229 is an apocalyptic number.

It is an amenable number.

399337296229 is a deficient number, since it is larger than the sum of its proper divisors (1).

399337296229 is an equidigital number, since it uses as much as digits as its factorization.

399337296229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 59521392, while the sum is 64.

The spelling of 399337296229 in words is "three hundred ninety-nine billion, three hundred thirty-seven million, two hundred ninety-six thousand, two hundred twenty-nine".