398884471 has 8 divisors (see below), whose sum is σ = 416715264. Its totient is φ = 381363960.

The previous prime is 398884439. The next prime is 398884477. The reversal of 398884471 is 174488893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 398884471 - 2⁵ = 398884439 is a prime.

It is a super-3 number, since 3×398884471³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398884477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74941 + ... + 80086.

It is an arithmetic number, because the mean of its divisors is an integer number (52089408).

Almost surely, 2^398884471 is an apocalyptic number.

398884471 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

398884471 is a deficient number, since it is larger than the sum of its proper divisors (17830793).

398884471 is a wasteful number, since it uses less digits than its factorization.

398884471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155141.

The product of its digits is 1548288, while the sum is 52.

The square root of 398884471 is about 19972.0923040126. The cubic root of 398884471 is about 736.1207213515.

The spelling of 398884471 in words is "three hundred ninety-eight million, eight hundred eighty-four thousand, four hundred seventy-one".