398065465767 has 4 divisors (see below), whose sum is σ = 530753954360. Its totient is φ = 265376977176.

The previous prime is 398065465757. The next prime is 398065465769. The reversal of 398065465767 is 767564560893.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 398065465767 - 2¹⁸ = 398065203623 is a prime.

It is a super-2 number, since 2×398065465767² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 398065465698 and 398065465707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398065465769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66344244292 + ... + 66344244297.

It is an arithmetic number, because the mean of its divisors is an integer number (132688488590).

Almost surely, 2^398065465767 is an apocalyptic number.

398065465767 is a deficient number, since it is larger than the sum of its proper divisors (132688488593).

398065465767 is a wasteful number, since it uses less digits than its factorization.

398065465767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132688488592.

The product of its (nonzero) digits is 228614400, while the sum is 66.

The spelling of 398065465767 in words is "three hundred ninety-eight billion, sixty-five million, four hundred sixty-five thousand, seven hundred sixty-seven".