398316666669 has 32 divisors (see below), whose sum is σ = 563309614080. Its totient is φ = 249488966400.

The previous prime is 398316666647. The next prime is 398316666677. The reversal of 398316666669 is 966666613893.

It is not a de Polignac number, because 398316666669 - 2⁹ = 398316666157 is a prime.

It is a super-2 number, since 2×398316666669² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398316666679) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121770504 + ... + 121773774.

It is an arithmetic number, because the mean of its divisors is an integer number (17603425440).

Almost surely, 2^398316666669 is an apocalyptic number.

It is an amenable number.

398316666669 is a deficient number, since it is larger than the sum of its proper divisors (164992947411).

398316666669 is a wasteful number, since it uses less digits than its factorization.

398316666669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6721.

The product of its digits is 272097792, while the sum is 69.

The spelling of 398316666669 in words is "three hundred ninety-eight billion, three hundred sixteen million, six hundred sixty-six thousand, six hundred sixty-nine".