399297706111 has 2 divisors, whose sum is σ = 399297706112. Its totient is φ = 399297706110.

The previous prime is 399297706051. The next prime is 399297706121. The reversal of 399297706111 is 111607792993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 399297706111 - 2¹⁵ = 399297673343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399297706121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199648853055 + 199648853056.

It is an arithmetic number, because the mean of its divisors is an integer number (199648853056).

Almost surely, 2^399297706111 is an apocalyptic number.

399297706111 is a deficient number, since it is larger than the sum of its proper divisors (1).

399297706111 is an equidigital number, since it uses as much as digits as its factorization.

399297706111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1285956, while the sum is 55.

The spelling of 399297706111 in words is "three hundred ninety-nine billion, two hundred ninety-seven million, seven hundred six thousand, one hundred eleven".