398271879 has 12 divisors (see below), whose sum is σ = 576431856. Its totient is φ = 264983712.

The previous prime is 398271871. The next prime is 398271893. The reversal of 398271879 is 978172893.

It is not a de Polignac number, because 398271879 - 2³ = 398271871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398271871) 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 11 ways as a sum of consecutive naturals, for example, 39462 + ... + 48515.

It is an arithmetic number, because the mean of its divisors is an integer number (48035988).

Almost surely, 2^398271879 is an apocalyptic number.

398271879 is a deficient number, since it is larger than the sum of its proper divisors (178159977).

398271879 is a wasteful number, since it uses less digits than its factorization.

398271879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88486 (or 88483 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 398271879 is about 19956.7502113946. The cubic root of 398271879 is about 735.7436926281.

The spelling of 398271879 in words is "three hundred ninety-eight million, two hundred seventy-one thousand, eight hundred seventy-nine".