398900271 has 16 divisors (see below), whose sum is σ = 663107328. Its totient is φ = 207220800.

The previous prime is 398900263. The next prime is 398900273. The reversal of 398900271 is 172009893.

It is not a de Polignac number, because 398900271 - 2³ = 398900263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398900273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 863190 + ... + 863651.

It is an arithmetic number, because the mean of its divisors is an integer number (41444208).

Almost surely, 2^398900271 is an apocalyptic number.

398900271 is a deficient number, since it is larger than the sum of its proper divisors (264207057).

398900271 is a wasteful number, since it uses less digits than its factorization.

398900271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726862.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 398900271 is about 19972.4878520429. The cubic root of 398900271 is about 736.1304405849.

It can be divided in two parts, 398900 and 271, that added together give a triangular number (399171 = T₈₉₃).

The spelling of 398900271 in words is "three hundred ninety-eight million, nine hundred thousand, two hundred seventy-one".