398713111 has 2 divisors, whose sum is σ = 398713112. Its totient is φ = 398713110.

The previous prime is 398713109. The next prime is 398713127. The reversal of 398713111 is 111317893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398713111 - 2¹ = 398713109 is a prime.

Together with 398713109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398716111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199356555 + 199356556.

It is an arithmetic number, because the mean of its divisors is an integer number (199356556).

Almost surely, 2^398713111 is an apocalyptic number.

398713111 is a deficient number, since it is larger than the sum of its proper divisors (1).

398713111 is an equidigital number, since it uses as much as digits as its factorization.

398713111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 34.

The square root of 398713111 is about 19967.8018569897. The cubic root of 398713111 is about 736.0152942385.

The spelling of 398713111 in words is "three hundred ninety-eight million, seven hundred thirteen thousand, one hundred eleven".