398008763 has 2 divisors, whose sum is σ = 398008764. Its totient is φ = 398008762.

The previous prime is 398008759. The next prime is 398008799. The reversal of 398008763 is 367800893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398008763 - 2² = 398008759 is a prime.

It is a super-3 number, since 3×398008763³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (398008733) 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, 199004381 + 199004382.

It is an arithmetic number, because the mean of its divisors is an integer number (199004382).

Almost surely, 2^398008763 is an apocalyptic number.

398008763 is a deficient number, since it is larger than the sum of its proper divisors (1).

398008763 is an equidigital number, since it uses as much as digits as its factorization.

398008763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 398008763 is about 19950.1569668010. The cubic root of 398008763 is about 735.5816353387.

The spelling of 398008763 in words is "three hundred ninety-eight million, eight thousand, seven hundred sixty-three".