399100259 has 2 divisors, whose sum is σ = 399100260. Its totient is φ = 399100258.

The previous prime is 399100253. The next prime is 399100321. The reversal of 399100259 is 952001993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 399100259 - 2¹⁶ = 399034723 is a prime.

It is not a weakly prime, because it can be changed into another prime (399100253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199550129 + 199550130.

It is an arithmetic number, because the mean of its divisors is an integer number (199550130).

Almost surely, 2^399100259 is an apocalyptic number.

399100259 is a deficient number, since it is larger than the sum of its proper divisors (1).

399100259 is an equidigital number, since it uses as much as digits as its factorization.

399100259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 399100259 is about 19977.4938117873. The cubic root of 399100259 is about 736.2534392972.

The spelling of 399100259 in words is "three hundred ninety-nine million, one hundred thousand, two hundred fifty-nine".