398148663 has 32 divisors (see below), whose sum is σ = 599219712. Its totient is φ = 233049600.

The previous prime is 398148661. The next prime is 398148671. The reversal of 398148663 is 366841893.

It is not a de Polignac number, because 398148663 - 2¹ = 398148661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398148661) 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 in 31 ways as a sum of consecutive naturals, for example, 137931 + ... + 140787.

It is an arithmetic number, because the mean of its divisors is an integer number (18725616).

Almost surely, 2^398148663 is an apocalyptic number.

398148663 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

398148663 is a deficient number, since it is larger than the sum of its proper divisors (201071049).

398148663 is a wasteful number, since it uses less digits than its factorization.

398148663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3015.

The product of its digits is 746496, while the sum is 48.

The square root of 398148663 is about 19953.6628968217. The cubic root of 398148663 is about 735.6678108414.

The spelling of 398148663 in words is "three hundred ninety-eight million, one hundred forty-eight thousand, six hundred sixty-three".