398694471 has 8 divisors (see below), whose sum is σ = 607534464. Its totient is φ = 227825400.

The previous prime is 398694463. The next prime is 398694493. The reversal of 398694471 is 174496893.

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

It is not a de Polignac number, because 398694471 - 2³ = 398694463 is a prime.

It is a super-3 number, since 3×398694471³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398694071) 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, 9492705 + ... + 9492746.

It is an arithmetic number, because the mean of its divisors is an integer number (75941808).

Almost surely, 2^398694471 is an apocalyptic number.

398694471 is a deficient number, since it is larger than the sum of its proper divisors (208839993).

398694471 is a wasteful number, since it uses less digits than its factorization.

398694471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18985461.

The product of its digits is 1306368, while the sum is 51.

The square root of 398694471 is about 19967.3351001079. The cubic root of 398694471 is about 736.0038243884.

The spelling of 398694471 in words is "three hundred ninety-eight million, six hundred ninety-four thousand, four hundred seventy-one".