398251882 has 16 divisors (see below), whose sum is σ = 686668032. Its totient is φ = 169691760.

The previous prime is 398251873. The next prime is 398251891. The reversal of 398251882 is 288152893.

It is an interprime number because it is at equal distance from previous prime (398251873) and next prime (398251891).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79794 + ... + 84637.

It is an arithmetic number, because the mean of its divisors is an integer number (42916752).

Almost surely, 2^398251882 is an apocalyptic number.

398251882 is a deficient number, since it is larger than the sum of its proper divisors (288416150).

398251882 is a wasteful number, since it uses less digits than its factorization.

398251882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164613.

The product of its digits is 276480, while the sum is 46.

The square root of 398251882 is about 19956.2491966802. The cubic root of 398251882 is about 735.7313786674.

The spelling of 398251882 in words is "three hundred ninety-eight million, two hundred fifty-one thousand, eight hundred eighty-two".