398153803 has 2 divisors, whose sum is σ = 398153804. Its totient is φ = 398153802.

The previous prime is 398153773. The next prime is 398153807. The reversal of 398153803 is 308351893.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 398153803 - 2⁹ = 398153291 is a prime.

It is not a weakly prime, because it can be changed into another prime (398153807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199076901 + 199076902.

It is an arithmetic number, because the mean of its divisors is an integer number (199076902).

Almost surely, 2^398153803 is an apocalyptic number.

398153803 is a deficient number, since it is larger than the sum of its proper divisors (1).

398153803 is an equidigital number, since it uses as much as digits as its factorization.

398153803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 398153803 is about 19953.7916948133. The cubic root of 398153803 is about 735.6709765905.

The spelling of 398153803 in words is "three hundred ninety-eight million, one hundred fifty-three thousand, eight hundred three".