399102113 has 2 divisors, whose sum is σ = 399102114. Its totient is φ = 399102112.

The previous prime is 399102079. The next prime is 399102127. The reversal of 399102113 is 311201993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248598289 + 150503824 = 15767^2 + 12268^2 .

It is a cyclic number.

It is not a de Polignac number, because 399102113 - 2¹⁰ = 399101089 is a prime.

It is not a weakly prime, because it can be changed into another prime (399102133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199551056 + 199551057.

It is an arithmetic number, because the mean of its divisors is an integer number (199551057).

Almost surely, 2^399102113 is an apocalyptic number.

It is an amenable number.

399102113 is a deficient number, since it is larger than the sum of its proper divisors (1).

399102113 is an equidigital number, since it uses as much as digits as its factorization.

399102113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 399102113 is about 19977.5402139503. The cubic root of 399102113 is about 736.2545793714.

The spelling of 399102113 in words is "three hundred ninety-nine million, one hundred two thousand, one hundred thirteen".