398899703 has 2 divisors, whose sum is σ = 398899704. Its totient is φ = 398899702.

The previous prime is 398899681. The next prime is 398899717. The reversal of 398899703 is 307998893.

It is a strong prime.

It is an emirp because it is prime and its reverse (307998893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398899703 - 2⁶ = 398899639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398899733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199449851 + 199449852.

It is an arithmetic number, because the mean of its divisors is an integer number (199449852).

Almost surely, 2^398899703 is an apocalyptic number.

398899703 is a deficient number, since it is larger than the sum of its proper divisors (1).

398899703 is an equidigital number, since it uses as much as digits as its factorization.

398899703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The square root of 398899703 is about 19972.4736324773. The cubic root of 398899703 is about 736.1300911890.

The spelling of 398899703 in words is "three hundred ninety-eight million, eight hundred ninety-nine thousand, seven hundred three".